Question

which is a reactant in the chemical reaction shown: $ce{h_{2}so_{4}} + 2 ce{nacn}
ightarrow 2 ce{hcn} + ce{na_{2}so_{4}}$$ce{h_{2}so_{4}}$$ce{hcn}$$ce{nacn}$$ce{na_{2}so_{4}}$

Explanation:

Step1: Identify reaction sides

In a chemical reaction $\text{Reactants}
ightarrow \text{Products}$, left = reactants, right = products.

Step2: Match options to reactants

Left side of given reaction: $\text{H}_2\text{SO}_4 + 2\text{NaCN}$, so these are reactants.

Answer:

A. $\text{H}_2\text{SO}_4$, C. $\text{NaCN}$