
	Where results make sense

Topic: Limewater

Related Topics

Distilled water

Caustic potash

History of South Africa

Song Hye Kyo

	The Degradation of Limewater in Air by Randy Holmes-Farley - Reefkeeping.com
		When limewater undergoes the degradation described by equations 5 and 6, the calcium and hydroxide ions are effectively removed from solution, and are replaced by uncharged calcium carbonate solids (which are not conductive).
		The conductivity of limewater as it is diluted.
		In terms of the degradation of limewater by atmospheric CO the addition of vinegar is not expected to have a big impact.
	www.reefkeeping.com /issues/2003-05/rhf/feature/index.php (3623 words)

	AquariumFish.com :: Aquarium Fish Magazine :: The monthly magazine for both novice and expert aquarium hobbyists.
		Increased amounts of limewater were used after the system was uncovered and fans were installed that blew air across the surface of the water.
		When you drip limewater into your aquarium, the primary reaction is that the hydroxide ions remove a proton from a bicarbonate ion and form a carbonate ion and water.
		Rather than pointing to differences in the mechanism of calcification when limewater is used, I believe the differences between the two species of corals are more accurately interpreted in terms of a difference in the relative amounts of carbon sequestered in calcium carbonate and the amount of inorganic carbon converted to organic compounds by photosynthesis.
	aquariumfish.com /aquariumfish/detail.aspx?aid=415&cid=124&category= (4353 words)

	Water Chemistry 2
		Using limewater for calcium maintenance helps to maintain the pH and alkalinity of the aquarium because the hydroxyl ions from the limewater neutralize some of the acids accumulating in the system.
		For one gallon of limewater, place a rounded teaspoon (1.8 grams, to be exact) of calcium oxide in a clean, clear glass or plastic container that will hold one gallon.
		The reaction of the calcium ions in the limewater with carbon dioxide in the air produces an insoluble white precipitate of calcium carbonate.
	www.amdareef.com /ho_chem2.htm (696 words)

	Limewater (Site not responding. Last check: 2007-11-03)
		Description: Carbon dioxide gas from a cylinder is bubbled through limewater and calcium carbonate solid is formed causing the limewater to become cloudy.
		Pour in fresh limewater and it will become cloudy indicating that there was in fact CO in that jar.
		About 1 Liter of limewater: made by putting solid calcium hydroxide (not much is needed) in water and letting is stand for a long time (overnight) and then filtering off the solid.
	chemlearn.chem.indiana.edu /demos/LIMEWATE.HTM (345 words)

	Chemistry and the Aquarium
		Limewater (aka kalkwasser), used in a reactor or not, and with vinegar or not
		Splashing of limewater into the eyes is especially to be avoided, and the use of safety goggles when using large amounts or in situations where exposure is likely is prudent.
		Limewater and calcium carbonate/carbon dioxide reactors are probably the best choices, with limewater not sufficing for the higher calcium demand tanks due to its limitation based on evaporation rates.
	www.advancedaquarist.com /issues/feb2003/chem.htm (6160 words)

	What Your Grandmother Never Told You About Lime by Randy Holmes-Farley - Reefkeeping.com
		Limewater that is saturated with calcium hydroxide has a pH of 12.54 at 25ºC. It is actually recognized as a secondary pH standard.
		Letting the limewater settle for a few hours to overnight will permit most of the large particles to settle out, and whether it looks clear at that point or not, it is likely fine to use.
		O + CO It is the carbonate that we are concerned with in the degradation of limewater.
	www.reefkeeping.com /issues/2005-01/rhf/index.php (7602 words)

	1-4 Investigating Unknown Substances
		The indicator phenol red was used to identify the acid nature of CO in water and the limewater identified the gas CO by producing a precipitate of calcium carbonate.
		Having identified the type of reactions that phenol red and limewater produce, the results in tubes 1 through 7 are explained.
		The phenol red indicator shows the presence of an acid and the limewater test demonstrates that CO is the by-product.
	www.fastol.com /~renkwitz/investigate_unknown.html (596 words)

	Chemistry and the Aquarium
		Table 1 shows their typical analysis and also shows the concentration in the limewater that would result if all of each of those impurities were to dissolve into the limewater.
		Limewater may be a useful way to add calcium and alkalinity to a reef tank while adding a minimal amount of certain heavy metals.
		Copper can be precipitated from limewater and thereby the amount delivered to aquaria may be less than would be suggested by the amount of copper in the solid lime or in the source water.
	www.advancedaquarist.com /issues/may2003/chem.htm (3614 words)

	Untitled Document
		The cloudiness of the limewater is proof that the bubbles produced by the reaction are carbon dioxide.
		Limewater only turns cloudy when it is exposed to carbon dioxide gas.
		The amount of foaming in the bottle, the amount of bubbling, and the color of the limewater need to be observed.
	www.bigelow.org /virtual/handson/co2_production.html (442 words)

	LJBERLIN
		Limewater should be added via a drip system or other methods that add it over the course of the entire day.
		I used limewater and this same methodology for keeping a fish only tank and the results were excellent.
		Where limewater is not enough to keep up with the calcium demand of a reef tank, there are several options.
	www.mops.ca /articles/marine01.htm (1104 words)

	Craig Bingman - Some Chemistry Behind Ca(OH)2 and CaCO3/CO2 Reactors .... reefs.org Article
		Both of these methods (limewater and CaCO3/CO2 reactors) achive balanced inputs of calcium and alkalinity by relying on the natural balance of calcium and alkalinity in calcium carbonate.
		Note that bicarbonate is not directly relevant, and hydroxide ion isn't relevant (except in the high pH limit of limewater.) Granted, in a given solution with various forms of inorganic carbon present, all of these values are going to be interrelated, but calcium and carbonate ions are where it is at for this discussion.
		That condition is never satisfied in your tank outside of the tiny area where a droplet of limewater hits the tank water.
	www.reefs.org /library/article/c_bingman.html (1198 words)

	dsa
		Bubbling CO into limewater is a standard qualitative test for CO State the test in your own words.
		This gas is suspected to be CO At the end of Step 4, CO is bubbled through limewater to produce a cloudy suspension as confirmation that the gas generated is CO However, in Step 5, the cloudiness disappears (see Post-Laboratory Discussion for relevant equations).
		A combination of reaction of CO with limewater and rapid cooling of hot gases, with the resultant decrease of volume, reduce gas pressure inside the bottle.
	intro.chem.okstate.edu /ChemSource/BIO/act1.htm (3515 words)

	Science experiments (Site not responding. Last check: 2007-11-03)
		The limewater turns from clear to a milky color.
		Limewater always turns milky when CO is mixed with it.
		The chemical in the limewater combines with the CO gas in the exhaled breath to form a white powder that is not soluble in water.
	www.geocities.com /CapeCanaveral/Hall/1410/lab-GS-14.html (100 words)

	Nasaexplores
		The demonstrations with the limewater and the balloon can be set up as group activities for the older students.
		This limewater will be used in the class demonstration.
		Take the jar of limewater, and pour half of the liquid in the clean jar.
	www.nasaexplores.com /show_k4_teacher_st.php?id=021226145714 (1458 words)

	Reef Science
		The limewater reactor is a tool used to maintain calcium and alkalinity levels in the reef aquarium.
		The reactor maintains a saturated calcium hydroxide solution by periodically operating a magnetic stirring device; receiving freshwater from a reservoir, clear limewater is displaced into the aquarium at a rate equal to the evaporation rate of the aquarium.
		Reactor setup is amongst the simplest used to support calcification within a reef aquarium; once the unit has been loaded with calcium hydroxide, setting up the dosing pump and adjusting the stir frequency is all that is required to get the unit fully operational.
	www.reefscience.com /web/kalk_reactor.php?PHPSESSID=f921bbb007b2b7da04da70879b942e9d (227 words)

	Chemistry and the Aquarium
		Consequently, limewater is most often added slowly, by dripping or slow pumping. Often it is added as the top off water, replacing most or all of the evaporated water.
		The solids on the bottom of a limewater reservoir contain everything that did not dissolve, or that dissolved and later precipitated from solution. Such solids could contain magnesium hydroxide and carbonate, calcium hydroxide and carbonate (though calcium hydroxide is fairly unlikely in unsaturated limewater) and a variety of other impurities, such as alumina, silica, etc.
		As expected, the magnesium depletion is faster when dosing the settled limewater. The difference is not all that great, however, because both the solid quicklime and the settled limewater are significantly deficient in magnesium (relative to typical corals and coralline algae).
	www.advancedaquarist.com /issues/dec2003/chem.htm (1673 words)

	Maintaining Calcium Levels, Calcium in reefs, corals and calcium,
		Limewater is simply a mixture of calcium hydroxide and water.
		I indicated earlier that to make kalkwasser (limewater), it is good practice to use 2.5 to 3 teaspoons of calcium hydroxide per gallon of KW you prepare.
		Be aware that the mere fact of replacing all the water that evaporates does not necesarily ensure that your calcium levels will be high enough (generally suggested concentrations range from 450-480 ppm on a constant basis).
	netclub.athiel.com /calcium/maintca.html (1763 words)

	Essay: The Concentration of Limewater Solution. - Coursework.Info
		To determine the exact concentration of the limewater, the hydrochloric acid must be titrated against it.
		The hydrochloric acid is very concentrated, and a very little amount will be needed to neutralise a flask full of limewater.
		I can use an appropriate value of limewater concentration to calculate the approximate value of 2.00mol dm-3 hydrochloric acid that will neutralise 25.00cm3 of the limewater.
	www.coursework.info /GCSE/Chemistry/Patterns_of_Behaviour/The_Concentration_of_Limewater_Solution_L23534.html (252 words)

	Untitled Document
		Limewater can be used as a testing solution for the existence of carbon dioxide.
		Be sure not to pour any of the lime that has settled on the bottom of the first jar into the second jar.
		This is limewater and can be used in experiments to test for the presence of carbon dioxide.
	www.bigelow.org /virtual/handson/limewater.html (277 words)

	Fresco, Red, yellow, white, green, test
		Square 2, Limewater cad red side is locked, casein cad red side is not.
		Square 3, Limewater Cad yellow side is locked, casein cad yellow is 90% locked.
		Square 4, Limewater titanium side is locked, Casein titanium side is 90% locked.
	www.realcolorwheel.com /frescoredyelwhtgrtest.htm (600 words)

	Essay: Finding the concentration of Limewater (Calcium Hydroxide) in a Titration using Hydrochloric Acid as a reagent - ...
		Finding the concentration of Limewater (Calcium Hydroxide) in a Titration using Hydrochloric Acid as a reagent Aim: The aim of this experiment is it to find out the concentration of Limewater by performing a titration with hydrochloric acid which has concentration exactly 2.00M.
		Equipment: The equipment I will need for this is a burette, 25ml pipette, pipette pump, white tile, clamp stand, boss head, clamp, 250ml limewater, phenolphthalein, 100ml hydrochloric acid, volumetric flask, distilled water, conical flasks and a calculator.
		The chemicals that we will use are limewater and hydrochloric acid and the hazards are as follows: * Hydrochloric acid - Very corrosive, irritant.
	www.coursework.info /A2_and_A-Level/Chemistry/Finding_the_concentration_of_Limewater_Calcium_Hydroxide_in_L12850.html (302 words)

	McCormick Forums - what is this??
		It was added to water to make limewater to drink to strengthen the bones in day of yore.
		Since it is caustic it has been replaced with salt water in recipes.
		Soak for 2 1/2 hours in limewater made with 2 quarts water and w Tablespoons lime of calcium oxide, purchased from drugstore.
	www.mccormick.com /fusetalk/messageview.cfm?catid=5&threadid=554 (250 words)

	Germantown Academy's Kindergarten : Estimating (Math) (Site not responding. Last check: 2007-11-03)
		The plastic bag was used to collect air and then the opening to the bag was closed off.
		The test used in the laboratory to identify a gas as carbon dioxide is to bubble the gas through limewater.
		If the limewater becomes cloudy, it must be carbon dioxide.
	www.ga.k12.pa.us /Academics/LS/K/KTK/gas (668 words)

	Is pH fluctuation normal in the reef aquarium? (Site not responding. Last check: 2007-11-03)
		It is at its lowest after the lighting has been off, typically in the AM and highest during the peak / end of the daily lighting cycle PM.
		Yes, calcium hydroxide, a.k.a.: limewater, a.k.a.: Kalkwasser, will definitely boost and maintain calcium levels AND pH.
		Properly mixed limewater has an approximate pH value between 10 and 14.
	www.simplifiedreefkeeping.com /faq/faq6.htm (130 words)

	MFA - CAMEO - Material Description
		An aqueous solution of calcium hydroxide produced by slaking lime.
		Limewater, is a colorless somewhat milky solution that is strongly alkaline even though calcium hydroxide is only slightly soluble in water.
		Limewater was used to saturate plaster before the application of secco colors.
	www.mfa.org /_cameo/frontend/material_description.asp?name=limewater&language=1 (85 words)

	How to Process Corn into Tortillas
		* Place one gallon of dry corn kernels in a large pot and add the limewater until the corn was completely covered.
		Slowly cook the corn for approximately 30 minutes until the outer skin is soft enough to peel off.
		* In the next morning, drain the limewater from the pot and rinse the corn with clean water.
	personals.galaxyinternet.net /tunga/I33.htm (453 words)

	How to make konjac foods (shirataki noodles or konnyaku) myself? (Site not responding. Last check: 2007-11-03)
		How to prepare the limewater: In a separate vessel, add 1/4 teaspoon of pickling lime into 5 tablespoons of water.
		This limewater is necessary to induce gel formation in glucomannan.
		Add limewater into the boiling bath and continue stirring for about 5 minutes without taking it off the flame.
	www.konjacfoods.com /konjac.htm (413 words)

	Tortillas, Frijoles Refritos, and other basics of Mexican Cooking (Site not responding. Last check: 2007-11-03)
		I prefer to use the first solution because [a] it's quicker, [b] powdered lime can be obtained from most hardware stores, and [c] the limewater method, traditionally, has been used the most in Mexico.
		CAUTION: Although countless generations of unschooled peasants have routinely and safely made their own hominy with both limewater and lye solutions, we "civilized" folks sometimes foolishly forget that either lye or lime can be caustic enough to dissolve an aluminum pan.
		To turn two quarts of corn into hominy using the limewater method, start by dissolving four heaping tablespoons of powdered lime in four quarts of water.
	www.motherearthnews.com /library/1977_July_August/Tortillas__Frijoles_Refritos__and_other_basics_of_Mexican_Cooking (3327 words)

Try your search on: Qwika (all wikis)