Chemistry and Chemical Reactivity (9th Edition)

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

Chapter 4 Stoichiometry: Quantitative Information about Chemical Reactions - Study Questions - Page 179d: 40

Answer

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Work Step by Step

Number of moles of potassium dichromate: $2.335\ g\div 294.185\ g/mol=0.00794\ mol$ Concentration: $0.00794\ mol/0.500\ L=0.0159\ M$ For the ions, from stoichiometry: $K^+$: $0.0317\ M$ $Cr_2O_7^{2-}$: $0.0159\ M$
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