rial l Trial Trial Mass of Mg consumed, g -a,agli 2. Moles of Mg consumed, n 3.
ID: 1067014 • Letter: R
Question
rial l Trial Trial Mass of Mg consumed, g -a,agli 2. Moles of Mg consumed, n 3. Initial eudiometer volume, mL oe ml duea ml D, mul 4. Final eudiometer volume, mL -HTiba am tsomu 5. Volume of gas, L 6. Temperature, CIK 7. Barometric Pressure, mm 8. vapor pressure of water, mmHg lamnt 9. Partial pressure Hz, mmHglatm 10. Revernmental, L atm/ mol K 11. Average Experimental R value 12. Deviation from the Average at -Quool -o oo 13. Average Deviation 14. Average Deviation 15. Error IRexp Reeol 16 Relative Error Instructor Grade on Precision Instructor Grade on Accuracy (0-3 Points) (0-3 Points) Sample Calculation: (Attach sheets as needed)Explanation / Answer
Determination of "R" from the expeirment
Effect of experimental factors
(a) If the magnesium stip has a layer of oxide on top of it, moles of Mg reacted would be lower than theoretical value. So the calclated R would be higher than the actual value (+)
(b) If the pressure is 5 cm higher than the level of the beaker, the final pressure of H2 calculated would be lower. Thus the calculate R would be higher than the actual value (-).
(c) If some Mg floated on top and did not react, moles of Mg would be lower than actual value. Moles of H2 moles of lower. Thus, calculate R would be higher than actual value (+).
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