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CO2(g)

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AP Chemistry

Definition

CO2(g) stands for carbon dioxide gas, which consists of one carbon atom bonded to two oxygen atoms.

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Practice Questions (4)

[N2O(g) + CO2(g) → NO2(g) + CO2(g)] The rate of the reaction increased with the presence of Pd(s). Which best describes what will happen with Pd added?
A mechanism is shown: [Step 1: 2NO2(g) → NO3(g) + NO(g) (slow)] [Step 2: NO3(g) + CO(g) → NO2(g) + CO2(g) (fast)]. Which is the correct rate law?
The enthalpy of change for the reaction H2(g) + 1/2 O2(g) → H2O (g) is -71.2 kJ/mol. The enthalpy of change for the reaction C2H2(g) + 2H2(g) → C2H6(g) is -94.5 kJ/mol. The enthalpy of change for the reaction C2H6(g) + 7/2 O2(g) → 2CO2(g) + 3H2O(g) is -283 kJ/mol. What is the enthalpy of change for the reaction 4CO2(g) + 2H2O(g) → 2C2H2(g) + 5O2(g)?
What is the enthalpy change for the reaction: C2H2(g) + 5/2O2(g) → 2CO2(g) + H2O(g) given the following chemical equations: (1) C2H2(g) + 5/2O2(g) → 2CO(g) + H2O(g) ΔH = -636.1 kJ/mol; (2) CO(g) + 1/2O2(g) → CO2(g) ΔH = -283.0 kJ/mol; (3) C2H2(g) + 5/2O2(g) → 2CO2(g) + H2O(g) ΔH = -1299.5 kJ/mol?

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