What happens when you use a straw to blow into a beaker a quarter full of lime water (Calcium Hydroxide)?
2007-03-26 03:31:49 · 13 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
The limewater turns milky/chalky because of carbon dioxide reacting with the limewater
2007-03-26 03:35:09 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The internal pressure caused due to the blowing of air into the beaker becomes greater than the external pressure.The air that we blow into the beaker contains diffused CO2 mostly.This CO2 reacts with the lime water instantly producing milky bubbles of lime water and due to the forced pressure there is a sudden and huge effervescence in the beaker which forces the lime water to split out.Above all, the lime water turns milky.
2007-03-26 03:51:55 · answer #2 · answered by stipus 1 · 0⤊ 0⤋
well... it has many use.. the most common is When lime is mixed with water, it forms calcium hydroxide, called slaked limedue to the co2 you added...
other uses are for construction. fast drying glues... paints...
lime is mixed with water and sand, the result is mortar, which is used in construction to make Mortar At room temperature, the reaction of lime with carbon dioxide is very slow. It is speeded by mixing lime with water. .
2007-03-26 03:43:22 · answer #3 · answered by Larry M 3 · 0⤊ 0⤋
1.the lime water turns milky(turbid) due to its reaction with carbon di oxide.which leads ot formation of calcium carbonate which is insoluble in water
CaOH+CO2------CaCO3+H2O
2. on excessive blowing the the lime water turns clear due to formation of water soluble calcium bi carbonate
2007-03-26 03:36:19 · answer #4 · answered by Aayush S 2 · 0⤊ 0⤋
Practically nothing, except that a small amount of calcium carbonate (chalk) will, over time, form, from the carbon dioxide in your breath.
2007-03-26 03:35:28 · answer #5 · answered by Matthew P 4 · 0⤊ 0⤋
Lime water turns milky due to the formation of insoluble Calcium carbonate(CaCO3) when it reacts with the exhaled CO2 :
Ca(OH)2+CO2--->CaCO3+H2O.
If we keep passing more CO2 then it will again become transparent due to the formation of soluble Calcium bicarbonate[Ca(HCO3)2]:
CaCO3+CO2+H2O--->Ca(HCO3)2.
I hope it will help...
2007-03-26 03:54:17 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Aayush S is right. The limewater will turn chalky initially but when you continue to blow carbon dioxide to it, the precipitate will dissolve.
2007-03-26 03:50:52 · answer #7 · answered by polymer_gal 2 · 0⤊ 0⤋
I *think* it recombines into calcium carbonate
CaOH + CO2 => CaCO3 + H2O (very unbalanced)
2007-03-26 03:37:40 · answer #8 · answered by Meg W 5 · 0⤊ 0⤋
calcium carbonate will be formed due to carbon dioxide you had given off and hydrogen will be given off
2007-03-26 03:38:56 · answer #9 · answered by Evan 3 · 0⤊ 0⤋
It will absorb the CO2 from your breath and begin to turn milky.
2007-03-26 05:42:26 · answer #10 · answered by Norrie 7 · 0⤊ 0⤋