Chapter 9, Problem 60A

Interpretation Introduction

Interpretation:

The compound XY is formed when X reacts with Y and XZ₃ is formed when X is reacts with Z. The molar mass of X and Z should be predicted.

Concept Introduction:

Molar mass is defined as an average mass of atoms present in the chemical formula. It is the sum of the atomic masses of all the atoms present in the chemical formula of any compound.

Answer to Problem 60A

The molar mass of X = 20 gmol-1

The molar mass of Z = 40 gmol-1

Explanation of Solution

The mass ratio of element X and Y is 1:3.

The molar ratio of X and Y is 1:1

The molar mass of Y is given which is 60 gmol-1. So, the molar mass of X is 60/3 = 20 gmol-1

The mass ratio of element X and element Z is 1:6.

The molar ratio of X and Z is 1:6

The molar mass of X is 20g.

20 g of X reacts with 20×6 i.e. 120 g of Z

The molar mass of Z is shown below:

Molar mass of Z = 120/3

= 40 gmol-1

Conclusion

Thus,

The molar mass of X = 20 gmol-1

The molar mass of Z = 40 gmol-1