Correct and balance the following reactions :
(a) Ca + H2 ⟶ CaOH + H
(b) N + H ⟶ NH3
(a)
The basic equation is
CaO+H2O⟶Ca(OH)2+H2
Here the number of hydrogen (H) atoms and number of oxygen (O) atoms on both side are different. So we give 2 molecules of H2O on left hand side.
So the balanced equation becomes,
CaO+2H2O⟶Ca(OH)2+H2
(b)
The basic equation is
N2+H2⟶NH3
Both hydrogen and nitrogen atoms are different on both sides.We first put 2 as coefficient on NH3. Ans then we balance hydrogen on left hand side.
So the balanced equation is,
N2+3H2⟶2NH3