2006-09-20 00:26:11 · 12 answers · asked by king 1 in Science & Mathematics ➔ Chemistry
Ca +2 H2O --> 2 H + Ca(OH)2
Edit - as other users point out, the 2 H should be a single H2 (hydrogen gas), but I was just balancing the equation in its requested form.
2006-09-20 00:31:33 · answer #1 · answered by Jobbo 3 · 0⤊ 0⤋
The important thing is to have the same number of each type of atom on both sides, so in this case we have two oxygens on one side and one on the other so we make it 2H2O:
Ca + 2H2O H2 + Ca(OH)2.
It's H2 rather than 2H because hydrogen gas exists as a molecule with 2 hydrogen atoms.
2006-09-20 00:37:43 · answer #2 · answered by Ellie 4 · 0⤊ 0⤋
Ca + 2H20 = Ca(OH)2 + H2
Hydrogen gas evoled will be in the molecular form of H2.
2006-09-21 11:03:11 · answer #3 · answered by Stu 1 · 0⤊ 0⤋
The H has to be H2 as hydrogen cannot exist as an atom in normal conditions.
Ca + 2H2O = H2 + Ca(OH)2
The calcium hydroxide [Ca(OH)2] formed is also known as limewater.
2006-09-20 00:45:25 · answer #4 · answered by Kemmy 6 · 0⤊ 0⤋
Ca + H2O = H + Ca(OH)2
Ca + (2)H2O = (2)H + Ca(OH)2
Ca= 1 : Ca= 1
H= 4 : H= 4
O= 2 : O= 2
2006-09-20 00:41:02 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Calcium hydroxide is a chemical compound with the chemical formulation Ca(OH)2. that could be a colourless crystal or white powder, and is created whilst calcium oxide (observed as lime or quicklime) is slaked with water. it could additionally be created by potential of blending an aqueous answer of calcium chloride and an aqueous answer of sodium hydroxide. a favourite call for calcium hydroxide is slaked lime, or hydrated lime.
2016-12-18 13:40:00 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Ca + 2H2O ---> H2 +Ca(OH)2
don't forget hyrdrogen is a diatomic molecule ;-)
2006-09-20 03:49:44 · answer #7 · answered by before&after 3 · 0⤊ 0⤋
Agree with Jobbo
2006-09-20 00:33:19 · answer #8 · answered by Omar Z 2 · 0⤊ 0⤋
Not on it's own - you can if you also add oxygen:
2Ca + 2H2O + O2 =2Ca(OH)2
2006-09-20 01:27:55 · answer #9 · answered by rowanflower 2 · 0⤊ 0⤋
No i can't but u could research for a science sites. or u could ask ur teacher or ur friends or pearents.
2006-09-20 00:40:10 · answer #10 · answered by Anonymous · 0⤊ 0⤋