Question

What are the coefficients for the reaction _Cl2O5 + _H2O → _HClO3 once it is balanced?

Answer 1

It is B (1,1,2) because when you plug those numbers in, there are the same amount of elements in the reactant and product, just rearranged as the format A+B →  AB, because this is a synthesis reaction.

Answer 2

Answer: The correct option is B.

Explanation: We are given an unbalanced chemical equation, so to find out the actual coefficients for the reaction, we need to balance it.

Balancing a chemical equation, we get

$Cl_2O_5+H_2O\rightarrow 2HClO_3$

The coefficients for the reaction as seen from above equation are 1, 1, 2.

The correct option is B.