   Chapter 14.7, Problem 1.2ACP

Chapter
Section
Textbook Problem

How many moles of carbonic anhydrase (approximate molar mass = 29,000 g/mol) are present in 100. mL of a solution containing a 2 mg/mL concentration (approximately physiological concentration) of carbonic anhydrase? Carbonic anhydrase can catalyze very fast reactions. Some forms of this enzyme have a turnover number equal to 1 × 106 s−1. This means that they can convert substrate to products at a rate of 1 × 106 moles of CO2 per mole of enzyme per second. What mass of CO2 could be converted to HCO3− in 1 second by the amount of enzyme calculated for the solution in the first part of this question?

Interpretation Introduction

Interpretation: The moles of enzyme and mass of carbon di-oxide has to be given.

Explanation

The moles of enzyme and mass of carbon di-oxide iss calculated as,

Calculate moles of carbonic anhydrase:No.of moles  = (100ml)(2mg/ml)(1g/100mg)(1mol/29,000g) = 6.9×10-6molenzyme.CalculatemassofCO2:MassofCO2 = (6

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