Answered: The balanced thermochemical equation…

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter7: Chemical Energy

Section: Chapter Questions

Problem 109AE: A sample of nickel is heated to 99.8C and placed in a coffee-cup calorimeter containing 150.0 g...

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Question

The balanced thermochemical equation for the combustion of exactly one mole of propane is:

C₃H_{8 (g)} + 5 O_{2 (g)} → 3 CO_{2 (g)} + 4 H₂O_(l) ΔH = -2220 kJ/mol

What is the enthalpy change for the reaction:

1.5 CO_{2 (g)} + 2 H₂O_(l) → 0.5 C₃H_{8 (g)} + 2.5 O_{2 (g)} ΔH = ?

(hint: report the nearest whole number as your answer. Don't worry about sig figs in your answer. Don't use scientific notation or include units in your answer. However, you must include the sign, "+" if the answer is positive, "-" if the answer is negative. Do not put a space between the sign and the number.)

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