Question

On balancing the given equation, a,b,c and d respectively would be $aF{e}_2{O}_3+b{H}_2\to cFe+d{H}_{2}O$

• A. 1,1,2,3
• B. 1,1,1,1
• C. 1,3,2,3
• D. 1,2,2,3

Answer 1

The correct option is C

1,3,2,3

In a balanced equation, the total mass of the reactants and products participating in an equation must be the same hence the balanced equation is $F{e}_2{O}_3+3H_2\to 2Fe+3H_{2}O$.

Elements L.H.S R.H.S

Fe 2a c

O 3a d

H 2b 2d

By applying hit and trial method, the answer comes to be a = 1, b = 3, c = 2, d = 3