Treatment of hydroxylamine (H2NOH) with an excess of Fe (III) results in the formation of N2O and an equivalent amount of Fe (II): 2 H2NOH + 4 F e3+ N2O(g) + 4 Fe2+ + 14 H+ + H2O Calculate the molar concentration of an H2NOH solution if the Fe (II) produced by treatment of a 49.00 -mL aliquot required 11.86 mL of 0.0556 M K2Cr2O7. Cr2O72- + 6 Fe2+ + 12 H+ 2 Cr3+ + 6 Fe 3+ + 7 H2O

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter4: Types Of Chemical Reactions And Solution Stoichiometry
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Problem 47E
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Treatment of hydroxylamine (H2NOH) with an excess of Fe (III) results in the formation of N2O and  an equivalent amount of Fe (II):

 2 H2NOH + 4 F e3+  N2O(g) + 4 Fe2+ + 14 H+ + H2O

 Calculate the molar concentration of an H2NOH solution if the Fe (II) produced by treatment of a 49.00 -mL aliquot required 11.86 mL of 0.0556 M K2Cr2O7.

 Cr2O72- + 6 Fe2+ + 12 H+  2 Cr3+ + 6 Fe 3+ + 7 H2O

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