College & University


College & University
College & University

Need help in CHEM

Miggi Groupbie

Joined: 02 June 2006
Posts: 142

Posted: 04 March 2010 at 7:55pm | IP Logged
     I am in university( first year) and I need help in Chemistry's lab.
okay we did a lab on determination of gas constant R.
and I need to report atlest 4 possible sources of systematic errors.
To give brief Intro " material used were Burette appratus which is used to measure the vol. of H2 gas, two samples of metal, HCl, erlenmeyer flask.
In this experiment we had to measure the vol of hydrogen gas when a known metal was reacted with excess HCl, strong acid. nd then we used experimental data to find gas constant R.
I hope i provided enufff info.
Plzz i need ans ASAP.THnxx in advance.

akhl IF-Rockerz

Joined: 30 March 2007
Posts: 5248

Posted: 05 March 2010 at 3:39am | IP Logged
1. Deviation in the actual behavior of hydrogen gas from ideal gas behavior.
2. Backlash error.
3. inequality, if any, of balance arms of physical balance
4. Manufacturing or inbuilt defect or limitation of the instruments used.
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