   Chapter 15, Problem 115AP ### Introductory Chemistry: A Foundati...

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

#### Solutions

Chapter
Section ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
115 views

# Concentrated hydrochloric acid is made by pumping hydrogen chloride gas into distilled water, if concentrated HCI contains 439 g of HCI per liter, what is the molarity?

Interpretation Introduction

Interpretation:

The molarity of the solution is to be calculated if the concentrated HCl contains 439g of HCl per liter.

Concept Introduction:

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 number of moles is calculated by the formula,

Moles=MassgMolarmass

The molarity is calculated by the formula,

Molarity=NumberofmolesofsoluteVolumeofsolutionL.

Explanation

The mass and volume of HCl solution is given to be 439g and 1L respectively.

The molar mass of HCl is 36.46g/mol.

The number of moles is calculated by the formula,

Moles=MassgMolarmass        (1)

Substitute the values of mass and molar mass in the equation (1).

Moles=439g36.46g/mol=12

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