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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Whelan Whelan
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8 years ago
In the laboratory, hydrogen gas is usually made by the following reaction:

Zn(s) + 2 HCl(aq) → H2(g) + ZnCl2(aq)

How many liters of H2 gas, collected over water at an atmospheric pressure of 752 mm Hg and a temperature of 21.0°C, can be made from 2.566 g of Zn and excess HCl? The partial pressure of water vapor is 18.65 mm Hg at 21.0°C.
A) 0.0701 L
B) 0.939 L
C) 0.959 L
D) 0.981 L
Textbook 
Introductory Chemistry Essentials

Introductory Chemistry Essentials


Edition: 5th
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hbutler2hbutler2
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Anonymous
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A year ago
How many liters of H2 gas, collected over water at an atmospheric pressure of 752 mmHg and a temperature of 21.0 C, can be made from 3.566 g of Zn and excess HCl? The partial pressure of the water vapor is 18.65 mmHg at 21.0 C
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