Question

Balance the Equation: Ca + 2H2O ---> Ca(OH2) + H2

Answer 1

The balanced equation is: 

Ca + 2 H2O --> Ca(OH)2 + H2 

Solutions 

1. First write the equation. 
2. Second check for the number of atoms 
3. Third Add coefficients 
4. Forth Check your answer 



Ca+H2O -----> Ca(OH)2+H2 
1 2 1 2 2 

3(Ca+H2O3) -----> 3(Ca(OH)2+H2) We added our coefficients 
3 6 1 -----> 1 2 2 
3 + 6 + 6 -----> 3 + 6 + 6 

3(Ca+H2O3) -----> 3(Ca(OH)2+H2) 

Answer 2

Ca + 2 H2O -----> Ca(OH)2 + H2 This is the balance equation