Reaction rates can change with
temperature
the addition of a catalyst
reactant concentrations
all of these
Which of the following statements is correct ? (a) The rate of reaction decreases with passage of time as the concentration of reactants decreases (b) The rate of 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)