   Chapter 13, Problem 100QAP ### 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
1 views

# elders commonly use an apparatus that contains a tank of acetylene ( C 2 H 2 ) gas and a tank of oxygen gas. When burned in pure oxygen, acetylene generates a large amount of heat.msp;  2C 2 H 2 ( g ) + 5O 2 ( g )   2H 2 O ( g ) + 4CO 2 ( g ) at volume of carbon dioxide gas at STP is produced if 1 .00  g of acetylene is combusted completely?

Interpretation Introduction

Interpretation:

The volume of carbon dioxide gas at STP should be calculated.

Concept Introduction:

According to ideal gas equation:

PV=nRT

Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature.

The value of Universal gas constant can be taken as 0.082 L atm K1 mol1.

Mass of gas can be calculated from number of moles and molar mass as follows:

m=n×M

Here, n is number of moles, m is mass and M is molar mass.

Explanation

Calculation:

The balanced chemical reaction is as follows:

2C2H2(g)+5O2(g)2H2O(g)+4CO2(g)

To calculate the volume of carbon dioxide, the number of moles of carbon dioxide and acetylene should be calculated first.

n=mM

Molar mass of acetylene is 26.04 g/mol, thus,

n=1 g26.04 g/mol=0.0384 mol

From the balanced chemical equation, 2 moles of acetylene produces 4 moles of carbon dioxide thus, 1 mol will produce 2 moles and 0

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