Which of the following statement is correct ?

Options

A. The rate of a reaction decreases with passage of time as the concentration of reactants decreases
B. The rate of a recation 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 increases in concentration of reactnat (s)

Answer

A

Explanation

Rate of reaction defined as rate of decreases of concentration of any one of reactant with passage of time
Rate of reaction `= ("Rate of disappearance of ractant")/("Time taken")`
`r=(-dx)/(dt)`
Thus as the concentration of reactant decreases with passage of time rate of reaction decreases .