A student investigated the effect of trypsin concentration on the digestion of a protein suspension. At a trypsin concentration of 2.5%, the time taken for the suspension to completely clear (indicating complete digestion) was 2 minutes and 40 seconds2\text{ minutes and } 40\text{ seconds}2 minutes and 40 seconds.
Calculate the rate of reaction for this 2.5% trypsin solution.
Use the equation:
Rate of reaction=1time taken \text{Rate of reaction} = \frac{1}{\text{time taken}} Rate of reaction=time taken1Give your answer to 3 significant figures and include the unit.