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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

An aqueous solution of 10.00 g of catalase, an enzyme found in the liver, has a volume of 1.00 L at 27°C. The solution’s osmotic pressure at 27°C is found to be 0.745 torr. Calculate the molar mass of catalase.

Interpretation Introduction

Interpretation: The Molar mass of Catalase has to be calculated.

Concept introduction

Molar mass: Molar mass of the substance is mass of given chemical compound divided by amount of the substance.

 Molar mass = Mass of the substanceamount of the substance

Explanation

Record the given data

Amount of Catalase = 10g

Temperature = 270C

Volume of solution = 1L

Osmotic pressure = 0.74 torr

To calculate moles of Catalase.

From the osmotic pressure equation,

         M =ΠRT

             = 0.745 torr×1atm760 torr0.08206 L atmK mol×300

            = 3.98 × 10-5mol/L

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