Handout1003 - Lecture outline for Wednesday October 3...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture outline for Wednesday, October 3, 2007 (Chem 100, section 2) Topic: Calorimetry and Heats of Reactions and Formation Specific Heat Capacity c (c s ) Specific heat is heat required to increase T by 1 K (or 1 °C) for a 1 g sample of a substance. (Molar) heat capacity (C) Sometime C means heat capacity of some object ( units J / K vs J / mol- K) Calculations with heat capacities ex) Heat capacity of 100.0 mL of water (c s = 4.17 J g -1 K -1 ) ex) A coin is heated to 100.0°C and dropped into 100.0 mL of water at 20.00°C. Final T of coin+water is 21.23°C. What is heat capacity of the coin? Calorimetry: Constant V (bomb calorimeter) and Constant P (“coffee cup” calorimeter): lid styrofoam cups (nested) soln A Graduated Cylinder (solution B) hole for supporting thermo- couple Use Scissors and a hole punch to modify the lid as shown below: cut out wedge through which solution B can be poured stir plate (be sure to turn on stirrer, not heat!) thermocouple stir bar Vernier LabPro
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/07/2008 for the course CHEM 100 taught by Professor Scarrow during the Fall '07 term at Haverford.

Ask a homework question - tutors are online