Calcium hydride, CaH2, reacts with water to form hydrogen gas.CaH2(s) + 2 H20() → Ca(OH)2(aq) + 2 H2(g)This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple, compact means of generating H2 isdesired. How many grams of CaH, are needed to generate 15.0 L of H, gas if the pressure of H, is 780. torr at 16°C?g

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etimes used to infla grams of CaH2 are

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter6: The Gaseous State

Section: Chapter Questions

Problem 6.136QE

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Question

Calcium hydride, CaH2, reacts with water to form hydrogen gas.
CaH2(s) + 2 H20() → Ca(OH)2(aq) + 2 H2(g)
This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple, compact means of generating H2 is
desired. How many grams of CaH, are needed to generate 15.0 L of H, gas if the pressure of H, is 780. torr at 16°C?
g

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