Question

10 grams of silver chloride undergoes a decomposition reaction to form silver and chloride. What will be the rate of the reaction if 8 g of silver chloride has decomposed completely in two minutes?

• A. 16 g min
• B. 10 g min
• C. 4 g/min
• D. 6 g min

Answer 1

The correct option is C

4 g/min

Amount of reactant used= 8 g

Time taken for the consumption of the reactant= 2 minutes

The rate of reaction determines the speed by which a chemical reaction proceeds. It can be calculated using the formula:

$\text{Rate of reaction}=\frac{\text{Amount of reactant used}}{\text{Time taken for the consumption of the reactant}}$ ...(i)

Substituting the value of the amount of reactant and the time taken for the consumption of the reactant in equation (i) we have:

$\text{Rate of reaction}=\frac{8}{2}$ g/min

Rate of reaction= 4 g/min.