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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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98. What volume of hydrogen chloride gas at STP is required to prepare 500. mL of 0.100 M HCI solution?

Interpretation Introduction

Interpretation:

The volume of HCl at STP required to prepare 500.mL of 0.100M

HCl solution is to be calculated.

Concept Introduction:

Solution is composed of solute and solvent particles. Solute particles are always present in lower amount as compared to amount of the solvent in the solution. The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.

The molarity is calculated by the formula,

Molarity=NumberofmolesofsoluteVolumeofsolutionL.

Explanation

The molarity of the solution is given to be 0.100M.

The conversion of units of 500.mL into L is done as,

500.mL=500.1000L=0.5L

The number of moles of solute in a solution is calculated by the formula,

Moles=Molarity×Volumeofsolution        (1)

Substitute the values of molarity and volume of solution in the equation (1).

Moles=0.100M×0.5L=0.05moles

At STP, the molar volume of HCl is 22.4L/mol

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