Chapter 17.6, Problem 1.1ACP

### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

Chapter
Section

### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
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 0.10Â g.

Mass percent is 0.035Â %.

Density of solution is 1.0â€‹Â gâ‹…mLâˆ’1.

MassÂ %â€‰=(massÂ ofÂ soluteÂ massâ€‰ofÂ solution)100Â %

Substitute the values.

massâ€‰ofÂ solution=(0.10Â g0.035)100=2.9Ã—102â€‹Â g

Density of solution is 1.0â€‹Â gâ‹…mLâˆ’1

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