
Concept explainers
(a)
Interpretation:
On the basis of the given information, the number of moles of nitrogen gas and water is to be determined
Concept Introduction :
The ideal gases are those gases which obey the ideal gas equation and the ideal gas equation is written as
Where, P = pressure of the gas
V = Volume of the gas
R = Gas constant
T = temperature of the gas
(a)

Answer to Problem 75A
In the given reaction,
Explanation of Solution
Given information:
The given unbalanced equation is:
Now, the balanced equation is:
Mass of ammonia gas =
Mass of oxygen gas =
The Molar mass of ammonia gas =
The Molar mass of oxygen gas =
Calculation:
To find the moles of nitrogen gas in
:
Mass of nitrogen gas
The mass of nitrogen gas is,
Number of moles is,
To find the number of moles of water:
The mass of water is
(b)
Interpretation: The total volume after completing a reaction is to be determined.
Concept Introduction :
The ideal gases are those gases which obey the ideal gas equation and the ideal gas equation is written as
Where, P = pressure of the gas
V = Volume of the gas
R = Gas constant
T = temperature of the gas
(b)

Answer to Problem 75A
After completing the reaction, the total volume is
Explanation of Solution
Given information:
Pressure =
Temperature =
Calculated number of moles of nitrogen gas =
Calculated number of moles of water =
Calculation:
Ideal gas equation,
Volume of nitrogen gas
And, the volume of water
The total volume is
Chapter 13 Solutions
World of Chemistry, 3rd edition
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