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Phoenix [80]
3 years ago
13

Which coefficients correctly balance the formula equation cao + h2o ® ca(oh)2?

Chemistry
1 answer:
djverab [1.8K]3 years ago
7 0
CaO + H2O → Ca(OH)2

the number of O atom on the left side is 1 and on the right side 2 so,

we put 2H2O instead of H2O 

CaO + 2H2O → Ca(OH)2 

now we have to put 2Ca(OH)2 instead of Ca(OH)2 to make H atoms equal on both sides 4

CaO + 2H2O → 2Ca(OH)2

now we have to put 2CaO instead of CaO to make Ca atoms equal on both sides 2 atoms.

∴ the final balanced equation is:

2CaO + 2H2O → 2 Ca(OH)2

∴ the coefficients are 2 2 2

 
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