APThermoaddsmplprblms

APThermoaddsmplprblms - AP Chemistry Thermochemistry Sample...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
AP Chemistry Thermochemistry Sample Problems 2008 1. When potassium melts at atmospheric pressure, the heat transfer is 14.6cal/g. The density of liquid potassium at its melting point is 0.82g/mL, and that of solid potassium is 0.86g/mL. Given that a volume change of 1.00mL at atmospheric pressure corresponds to 0.10J, calculate Δ H and Δ E for melting 1.00g potassium. 2. Calculate the energy transferred to the surroundings when water vapor in the air condenses at 25 o C to give rain in a thunderstorm. Suppose that one inch of rain falls over one square mile of ground, so that 6.6x10 10 mL has fallen. (Assume Δ H 2 O (l) = 1.00g/mL). The enthalpy of vaporization for water is 44.0kJ/mol 3. Given the thermochemical expression BaO (s) + CO 2(g) BaCO 3(s) Δ H o = -662.8kJ Write the thermochemical expression for the production of 4mol CO 2 by decomposition of solid barium carbonate. 4.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/07/2011 for the course CHEM 100 taught by Professor Feebeck during the Fall '10 term at Purdue.

Page1 / 2

APThermoaddsmplprblms - AP Chemistry Thermochemistry Sample...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online