Question
Which of the following statements is correct?
A.
The rate of a reaction decreases with passage of time as the concentration of reactants decreases.
B.
The rate of a reaction is same at any time during the reaction.
C.
The rate of a reaction is independent of temperature change.
D.
The rate of a reaction decreases with increase in concentration of reactant$$(s).$$
Answer :
The rate of a reaction decreases with passage of time as the concentration of reactants decreases.
Solution :
According to rate law expression, $${\text{Rate}} \propto \left[ R \right]$$
Thus, rate of a reaction decreases with passage of time as the concentration of reactants decreases.