AP Chemistry – Class 62

Lab Setup

Lab: Heat of Vaporization of Water

Dates

• Period E  – Thursday, January 31st
• Period F – Thursday, January 31st

Big Idea: How can we determine the energy needed to change water from liquid to vapor?

Lab Notes

• Be sure and collect all appropriate information
• We will use digital data collectors for the temperatures

Data

• initial height “h” (mm)
• P_air (inches Hg) from Weather.com
• Volume in cylinder (mL) every 5°C using iPad)
• Temperature of water (°C) every 5°C (or so) using iPad

Homework & Looking Ahead

• All lab calculations due Friday
• Be sure and plot appropriate data using Excel (or similar)
• Enter all information in LNB
• Compare to known value
• NOTE: if you send me a spreadsheet (or share one) with your raw data I may be able to post your results for you. This offer only applies to those who send data only…