The reaction of calcium hydride with water can be used to prepare small quantities of hydrogen gas,

Question:

The reaction of calcium hydride with water can be used to prepare small quantities of hydrogen gas, as is done to fill weather-observation balloons.

CaH2(s) + H2O(l) → Ca(OH)2(s) + H2(g) (not balanced)

(a) How many grams of H2(g) result from the reaction of 127 g CaH2 with an excess of water?

(b) How many grams of water are consumed in the reaction of 56.2 g CaH2?

(c) What mass of CaH2(s) must react with an excess of water to produce 8.12 X 1024 molecules of H2?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

Question Posted: