1. Calculations of volumetric analysis ordinarily consist of transforming the quantity of titrant used (in chemical units) to a chemically equivalent quantity of analyte (also in chemical units) through use of a stoichiometric factor. Use chemical formulas and dimensional analysis (NO CALCULATIONS REQUIRED) to express the ratio for the calculation of the percentage (w/w) of: a. hydrazine in rocket fuel by titration with standard iodine. Reaction: H₂NNH₂ +21₂ →→→ N₂(g) + 4I* + 4H* ->> b. sulfur in an agricultural spray that was converted to thiocyanate with an unmeasured excess of cyanide. Reaction: S(s) 1 CN- → SCN- After removal of the excess cyanide, the thiocyanate was titrated with a standard potassium iodate solution in strong HCl. Reaction: 2SCN+ 3103 + 2H+ +6Cl →>>> 2SO4+2CN +3ICl₂ + H₂O

1. Calculations of volumetric analysis ordinarily consist of transforming the quantity of titrant used (in chemical units) to a chemically equivalent quantity of analyte (also in chemical units) through use of a stoichiometric factor. Use chemical formulas and dimensional analysis (NO CALCULATIONS REQUIRED) to express the ratio for the calculation of the percentage (w/w) of: a. hydrazine in rocket fuel by titration with standard iodine. Reaction: H₂NNH₂ +21₂ →→→ N₂(g) + 4I* + 4H* ->> b. sulfur in an agricultural spray that was converted to thiocyanate with an unmeasured excess of cyanide. Reaction: S(s) 1 CN- → SCN- After removal of the excess cyanide, the thiocyanate was titrated with a standard potassium iodate solution in strong HCl. Reaction: 2SCN+ 3103 + 2H+ +6Cl →>>> 2SO4+2CN +3ICl₂ + H₂O

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Only answer letter b

1. Calculations of volumetric analysis ordinarily consist of transforming the quantity of titrant used
(in chemical units) to a chemically equivalent quantity of analyte (also in chemical units)
through use of a stoichiometric factor. Use chemical formulas and dimensional analysis (NO
CALCULATIONS REQUIRED) to express the ratio for the calculation of the percentage (w/w)
of:
a. hydrazine in rocket fuel by titration with standard iodine. Reaction:
N₂(g) +41 + 4H+
b. sulfur in an agricultural spray that was converted to thiocyanate with an unmeasured
excess of cyanide. Reaction:
H₂NNH₂ +21₂
S(s) 1 CN- → SCN-
After removal of the excess cyanide, the thiocyanate was titrated with a standard
potassium iodate solution in strong HCl. Reaction:
2SCN + 3103 + 2H+ + 6Cl
2SO4+2CN +3ICl₂ + H₂O

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