What will be the order of reaction if the plot of log c verses time is a straight line with a negative slope?
First order.
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How does the rate of a reaction change with the change of temperature?
In a chemical reaction with rise in temperature by 10°, the rate constant is nearly doubled. Thus rate of reaction increases exponentially with the temperature.
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What is the usefulness of initial rate constant?
Initial rates allow more reliable information to be determined regarding orders, activation energies and possible mechanisms (which is the ultimate aim of reaction kinetics).