   Chapter 17.6, Problem 1.1ACP

Chapter
Section
Textbook Problem

Approximately 0.10 g of sodium cyanide is fatal to humans. What volume (in mL) of 0.035 mass percent NaCN solution contains a fatal dose of sodium cyanide? Assume the density of the solution is 1.0 g/mL.

Interpretation Introduction

Interpretation:

The volume of 0.035 mass percent NaCN solution that contains a fatal dose of sodium cyanide is to be calculated.

Concept introduction:

Mass percent is expressed as the mass of solute in grams divided by the mass of solution and then multiplied by 100.

Mass %=(mass of solute massof solution)100 %

Explanation

The volume of 0.035 mass percent NaCN solution that contains a fatal dose of sodium cyanide is calculated below.

Given:

Mass of solute (NaCN) is 0.10 g.

Mass percent is 0.035 %.

Density of solution is 1.0 gmL1.

Mass %=(mass of solute massof solution)100 %

Substitute the values.

massof solution=(0.10 g0.035)100=2.9×102 g

Density of solution is 1.0 gmL1

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