Question
Hydrogen gas is produced by the reaction of hydrochloric acid, HCl, on zinc metal. 2HCl( aq ) + Zn( s ) ZnCl 2 ( aq
Hydrogen gas is produced by the reaction of hydrochloric acid, HCl, on zinc metal.
2HCl(aq) + Zn(s) ZnCl2(aq) + H2(g)
The gas is collected over water. If 155 mL of gas is collected at 19C and 767 mmHg total pressure, what is the mass of hydrogen collected?
The vapor pressure of H2O at 19C is 16.5 mmHg.
______g H2
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Introductory Chemistry version 1.0
Authors: David W. Ball
1st edition
1453327657, 978-1453327654
