Problem Set 4 Answer Key

Problem Set 4 - Problem Set 4 Use Hess's law to determine the change in enthalpy for the reaction 2C(s H2 C2H2 given the following reactions a C(s

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

View Full Document Right Arrow Icon
Problem Set 4 Use Hess’s law to determine the change in enthalpy for the reaction 2C (s) + H 2 C 2 H 2 given the following reactions. a) C (s) + O 2(g) CO 2 = -393.5 KJ b) H 2(g) + ½ O 2(g) H2O (l) = -285.8 KJ c) 2C 2 H 2(g) + 5O 2(g) 4CO 2(g) + 2H 2 O (l) = -2598.8 KJ 2C (s) + 2O 2(g) 2CO 2 = -787 KJ H 2(g) + ½ O 2(g) H2O (l) = -285.8 KJ 2CO 2 + H 2 O C 2 H 2 + 3/2 O 2 = 1299 KJ = 226KJ Write the net ionic equation for the following reaction: BaCl 2(aq) + Na 2 SO 4(aq) BaSO 4(s) + 2NaCl (aq) Ba 2+ + SO 4 2- BaSO 4 Calculate the Enthalpy of reaction for the reaction of igniting propane (C 3 H 8 ) in air to produce carbon dioxide and water. O-H 460 KJ, C-O 351KJ, O-O 498 KJ C-C = 347 KJ, C-H = 414 KJ, H-H = 436 KJ (Hint: Make sure you write a balanced reaction) Bonds Broke Bonds Formed C-C (2 x 347) = 694 KJ O-H (8 x 460) = 3680 KJ C-H (8 x 41) = 3312 KJ C-O (6 x 2106) = 2106 KJ O-O Bonds Broke – Bonds Formed = 710 KJ A pool that 7 ft wide, 10 ft. long, and 3 ft. deep is filled with water and is initially 10 o C.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Obviously, this is much to cold to go for a swim, so the owner of pool decides to turn the
Background 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 03/30/2008 for the course CEM 141 taught by Professor Hunter during the Fall '08 term at Michigan State University.

Page1 / 2

Problem Set 4 - Problem Set 4 Use Hess's law to determine the change in enthalpy for the reaction 2C(s H2 C2H2 given the following reactions a C(s

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