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11 Dec 2019
The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can reach the zinc). The reaction between the acid and the zinc is
2H+(aq)+Zn(s)âH2(g)+Zn2+(aq).
When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 âC is 0.951 L at a total pressure of 755 mmHg. (Vapor pressure of water is 23.78 mmHg at 25 âC.)
What mass of hydrogen gas is collected? Thanks :)
The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can reach the zinc). The reaction between the acid and the zinc is
2H+(aq)+Zn(s)âH2(g)+Zn2+(aq).
When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 âC is 0.951 L at a total pressure of 755 mmHg. (Vapor pressure of water is 23.78 mmHg at 25 âC.)
What mass of hydrogen gas is collected? Thanks :)
evereadyLv10
17 Jun 2023
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12 Jun 2023
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Sixta KovacekLv2
13 Dec 2019
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