Gas Behavior Lab

Gas Behavior Lab - Calculations This calculation was used...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Gas Behavior Lab Parker Ashbaugh T.A. Yisheng Xu 4/19/07 Lab 104A Sec 45 Abstract
Background image of page 1

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

View Full DocumentRight Arrow Icon
Introduction In this lab we are to use a real gas with the help of the Ideal Gas Law to determine Rydberg’s constant, R. The Ideal Gas Law states: PV= nRT, where P is pressure, V is volume, n is the number of moles of gas, T is temperature and R is a constant. R can be calculated by measuring and gathering the other variables values. An ideal gas is one that occupies no volume and whose molecules don’t interact. Real gases don’t fit this definition but they are all close. Therefore we are going to compare the constant we calculate with the Ideal Gas Law constant. To do this, a liquid will be heated into a gas and its properties will be measured. Then these values will be plugged into the equation to solve for R. It is already known that our calculated value for R will not be the exact same as the real constant, but it should be somewhat similar.
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Calculations This calculation was used to determine the number of moles of gas in the flask. Moles of gas = mass of gas/ molecular weight of gas Moles of gas = This calculation was used to determine the experimental gas constant, R. PV = nRT or R= PV/nT This calculation was used to find the average R value. Average R value = R1 + R2 + R3/ 3 Average R value = The last calculation was finding the standard deviation. Standard Deviation = √(Ra – R1) 2 + (Ra – R2) 2 + (Ra – R3) 2 / 3-1 (Ra stands for Average R) Standard Deviation = Results This table shows all the measured and calculated values for the three separate trials. Trial 1 Trial 2 Trial 3 Overall Moles of gas (mol) Gas Constant (R) (L atm/ mol K) Average R (L atm/ mol K) Deviations Standard Deviation Deviation of Average from Ideal Discussion...
View Full Document

This note was uploaded on 04/03/2008 for the course CHEM 103a taught by Professor Weso during the Spring '08 term at Arizona.

Page1 / 3

Gas Behavior Lab - Calculations This calculation was used...

This preview shows document pages 1 - 3. Sign up to view the full document.

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