Chemistry: An Atoms-Focused Approach
Chemistry: An Atoms-Focused Approach
14th Edition
ISBN: 9780393912340
Author: Thomas R. Gilbert, Rein V. Kirss, Natalie Foster
Publisher: W. W. Norton & Company
Question
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Chapter 1, Problem 1.87QA
Interpretation Introduction

To check

which mixture follows the law of definite proportion.

Expert Solution & Answer
Check Mark

Answer to Problem 1.87QA

Solution:

Option a. 11.0 g of sodium and 17.0 g of chlorine and Option b. 6.5 g of sodium and 10.0 g of chlorine would react to produce NaCl, with no sodium or chlorine left over.

Explanation of Solution

Here we will check the mole ratio between sodium and chlorine (chloride ions).

The molar mass of Na is 23.00 g/mol and the molar mass of Cl is 35.45 g/mol.

Moles of Na=1.00 g Na× 1 mol Na23.00 g Na=0.04347 mol Na

Moles of Cl=1.54 g Cl× 1 mol Cl35.45 g Cl=0.04344 mol Cl

Now find out mole ratio between sodium ion and chlorine ion.

Moles of Na+Moles of Cl-= 0.04347 mol0.04344 mol1

Therefore Na+ and Cl- ion combine in 1:1 mole ratio.

Similarly we check the mole ratio between Na+ and Cl- ion in other mixtures.

Mixture a. 11.0 g of sodium and 17.0 g of chlorine.

Moles of Na=11.0 g Na× 1 mol Na23.00 g Na=0.4783 mol Na

Moles of Cl=17.0 g Cl× 1 mol Cl35.45 g Cl=0.4795 mol Cl

Now find out mole ratio between sodium ion and chlorine ion.

Moles of Na+Moles of Cl-= 0.4783 mol0.4795 mol1

Na+ and Cl- ion combine in 1:1 mole ratio. Therefore mixture a. 11.0 g of sodium ion and 17.0 g of chlorine ion produce NaCl with no sodium or chlorine left over.

Mixture b. 6.5 g of sodium and 10.0 g of chlorine.

Moles of Na=6.5 g Na× 1 mol Na23.00 g Na=0.2826 mol Na

Moles of Cl=10.0 g Cl× 1 mol Cl35.45 g Cl=0.2821 mol Cl

Now find out mole ratio between sodium ion and chlorine ion.

Moles of Na+Moles of Cl-= 0.2826 mol0.2821 mol1

Na+ and Cl- ion combine in 1:1 mole ratio. Therefore mixture b. 6.5 g of sodium ion and 10.0 g of chlorine ion produce NaCl with no sodium or chlorine left over.

Mixture c. 6.5 g of sodium and 12.0 g of chlorine.

Moles of Na=6.5 g Na× 1 mol Na23.00 g Na=0.2826 mol Na

Moles of Cl=12.0 g Cl× 1 mol Cl35.45 g Cl=0.3385 mol Cl

Now find out mole ratio between sodium ion and chlorine ion.

Moles of Na+Moles of Cl-= 0.2826 mol0.3385 mol=0.8349

Here, Na+ and Cl- ion do not combine in 1:1 mole ratio. All the sodium ion will get consumed and some mass of chlorine will remain.

Mixture d. 6.5 g of sodium and 8.0 g of chlorine.

Moles of Na=6.5 g Na× 1 mol Na23.00 g Na=0.2826 mol Na

Moles of Cl=8.0 g Cl× 1 mol Cl35.45 g Cl=0.2257 mol Cl

Now find out mole ratio between sodium ion and chlorine ion.

Moles of Na+Moles of Cl-= 0.2826 mol0.2257 mol=1.25

Here, Na+ and Cl- ion do not combine in 1:1 mole ratio. All the chlorine ion will get consumed and some mass of sodium will remain.

Conclusion:

Option a. 11.0 g of sodium and 17.0 g of chlorine and Option b. 6.5 g of sodium and 10.0 g of chlorine would react to produce NaCl, with no sodium or chlorine left over.

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Chapter 1 Solutions

Chemistry: An Atoms-Focused Approach

Ch. 1 - Prob. 1.11QACh. 1 - Prob. 1.12QACh. 1 - Prob. 1.13QACh. 1 - Prob. 1.14QACh. 1 - Prob. 1.15QACh. 1 - Prob. 1.16QACh. 1 - Prob. 1.17QACh. 1 - Prob. 1.18QACh. 1 - Prob. 1.19QACh. 1 - Prob. 1.20QACh. 1 - Prob. 1.21QACh. 1 - Prob. 1.23QACh. 1 - Prob. 1.24QACh. 1 - Prob. 1.25QACh. 1 - Prob. 1.26QACh. 1 - Prob. 1.27QACh. 1 - Prob. 1.28QACh. 1 - Prob. 1.29QACh. 1 - Prob. 1.30QACh. 1 - Prob. 1.31QACh. 1 - Prob. 1.32QACh. 1 - Prob. 1.33QACh. 1 - Prob. 1.34QACh. 1 - Prob. 1.35QACh. 1 - Prob. 1.36QACh. 1 - Prob. 1.37QACh. 1 - Prob. 1.38QACh. 1 - Prob. 1.39QACh. 1 - Prob. 1.40QACh. 1 - Prob. 1.41QACh. 1 - Prob. 1.42QACh. 1 - Prob. 1.43QACh. 1 - Prob. 1.44QACh. 1 - Prob. 1.45QACh. 1 - Prob. 1.46QACh. 1 - Prob. 1.47QACh. 1 - Prob. 1.48QACh. 1 - Prob. 1.49QACh. 1 - Prob. 1.50QACh. 1 - Prob. 1.51QACh. 1 - Prob. 1.52QACh. 1 - Prob. 1.53QACh. 1 - Prob. 1.54QACh. 1 - Prob. 1.55QACh. 1 - Prob. 1.56QACh. 1 - Prob. 1.57QACh. 1 - Prob. 1.58QACh. 1 - Prob. 1.59QACh. 1 - Prob. 1.60QACh. 1 - Prob. 1.61QACh. 1 - Prob. 1.62QACh. 1 - Prob. 1.63QACh. 1 - Prob. 1.64QACh. 1 - Prob. 1.65QACh. 1 - Prob. 1.66QACh. 1 - Prob. 1.67QACh. 1 - Prob. 1.68QACh. 1 - Prob. 1.69QACh. 1 - Prob. 1.70QACh. 1 - Prob. 1.71QACh. 1 - Prob. 1.72QACh. 1 - Prob. 1.73QACh. 1 - Prob. 1.74QACh. 1 - Prob. 1.75QACh. 1 - Prob. 1.76QACh. 1 - Prob. 1.77QACh. 1 - Prob. 1.78QACh. 1 - Prob. 1.79QACh. 1 - Prob. 1.80QACh. 1 - Prob. 1.81QACh. 1 - Prob. 1.82QACh. 1 - Prob. 1.83QACh. 1 - Prob. 1.84QACh. 1 - Prob. 1.85QACh. 1 - Prob. 1.86QACh. 1 - Prob. 1.87QACh. 1 - Prob. 1.88QACh. 1 - Prob. 1.90QACh. 1 - Prob. 1.91QACh. 1 - Prob. 1.92QACh. 1 - Prob. 1.93QACh. 1 - Prob. 1.94QA
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