Sample Problem 5.9
Calculating the Amount of Gas Collected Over Water
PLAN:
SOLUTION:
The difference in pressures will give P for C2H2. The ideal gas law allows a determination of n. Converting n to grams requires the molar mass, M.
Ptotal
H2O
x M
= (738 - 21) torr = 717 torr
717 torr x
= 0.943 atm
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