
Concept explainers
Acidic oxides such as carbon dioxide react with basic oxides like calcium oxide (CaO) and barium oxide (BaO) to form salts (metal carbonates). (a) Write equations representing these two reactions. (b) A student placed a mixture of BaO and CaO of combined mass 4.88 g in a 1.46-L flask containing carbon dioxide gas at 35°C and 746 mmHg. After the reactions were complete, she found that the CO2 pressure had dropped to 252 mmHg. Calculate the percent composition by mass of the mixture. Assume volumes of the solids are negligible.
(a)

Interpretation:
The given reaction of equation and the percent composition by mass of the mixture, the volume of the solids has to be determined.
Concept Introduction:
Ideal gas is the most usually used form of the ideal gas equation, which describes the relationship among the four variables P, V, n, and T. An ideal gas is a hypothetical sample of gas whose pressure-volume-temperature behavior is predicted accurately by the ideal gas equation.
Answer to Problem 5.129QP
Explanation of Solution
To find the given reaction of equation
Calcium oxide is combined with Carbon dioxide to give Calcium Carbonate this reaction formed addition product.
Barium oxide is combined with Carbon dioxide to give Barium Carbonate this reaction formed addition product.
(b)

Interpretation:
The given reaction of equation and the percent composition by mass of the mixture, the volume of the solids has to be determined.
Concept Introduction:
Ideal gas is the most usually used form of the ideal gas equation, which describes the relationship among the four variables P, V, n, and T. An ideal gas is a hypothetical sample of gas whose pressure-volume-temperature behavior is predicted accurately by the ideal gas equation.
Answer to Problem 5.129QP
Explanation of Solution
We need to find the number of moles of
Thus, the amount of
Mass of Calcium oxide in the mixture
Hence the mixture is contains
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Chapter 5 Solutions
EBK CHEMISTRY
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