Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 3 Chemical Reactions - Study Questions: 60

Answer

See answer below.

Work Step by Step

a) $Ca_3(PO_4)_2(s)+2\ H_2SO_4(aq) \rightarrow Ca(H_2PO_4)_2(aq)+2\ CaSO_4(s)$ Balance the phosporus first, then calcium, then sulfur. b) $2\ NaBH_4(s)+H_2SO_4(aq)\rightarrow B_2H_6(g)+2\ H_2(g)+Na_2SO_4(aq)$ Balance the boron first, then sodium, then sulfur and hydrogen. c) $WO_3(s)+3\ H_2(g)\rightarrow W(s)+3\ H_2O(l)$ d) $(NH_4)_2Cr_2O_7(s)\rightarrow N_2(g)+4\ H_2O(l)+Cr_2O_3(s)$
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