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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro
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The zinc within a copper-plated penny will dissolve in

Chapter 5, Problem 69E

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QUESTION:

The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can get to the zinc). The reaction between the acid and the zinc is 2 H+(aq) + Zn(s) → H2(g) + Zn2+(aq). When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °C is 0.951 L at a total pressure of 748 mmHg. What mass of hydrogen gas is collected?

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QUESTION:

The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can get to the zinc). The reaction between the acid and the zinc is 2 H+(aq) + Zn(s) → H2(g) + Zn2+(aq). When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °C is 0.951 L at a total pressure of 748 mmHg. What mass of hydrogen gas is collected?

ANSWER:

Problem 69 EThe zinc within a copper-plated penny will dissolve in hydrochloric acid if the coppercoating is filed down in several spots (so that the hydrochloric acid can get to the zinc) Thereaction between the acid and the zinc isWhen the zinc in a certain penny dissolves, the total volume of gas collected over water at is 0.951 L at a total pressure of 748 mmHg. What mass of hydrogen gas is collected Step by step solutionStep 1 of 4Write the reaction between hydrochloric acid with zinc as follows:The total volume of a gas is 0.951 L and the total pressure of gas collected over water is 748mmHg respectively.

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