Section: 3. Balance the following reactions based on the given method: (use the provided sheet for the balancing) Oxidation Number Method a) HNO3(aq) + C,H,O(1) + K,Cr,O,(aq) KNO,(aq) + C,H,0(1) + H,0(1) + Cr(NO,),(aq) >

Section: 3. Balance the following reactions based on the given method: (use the provided sheet for the balancing) Oxidation Number Method a) HNO3(aq) + C,H,O(1) + K,Cr,O,(aq) KNO,(aq) + C,H,0(1) + H,0(1) + Cr(NO,),(aq) >

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter3: Chemical Reactions

Section: Chapter Questions

Problem 3.BCP

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Question

COLLEGE INC., OLONGAPO CITY
HmGH SCHOOL - BASIC EDUCATION DEPARTMENT ASINAN
LEARNER'S MODULE
Name of the Student
Section:
3. Balance the following reactions based on the given method: (use the provided sheet for the
balancing)
Oxidation Number Method
a) HNO3(aq) + C,H,O(1) + K,Cr,0,(aq)
KNO3(aq) + C,H,O(1) + H,O(1) + Cr(NO3)(aq)
Br2(1) + H,0(1) + KCI(aq)
b) KCIO,(aq) + HBr(aq)

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4.112 A metallurgical firm wishes to dispose of 1300 gallons of waste sulfuric acid whose molarity is 1.37 M. Before disposal, it will be reacted with calcium hydroxide (slaked lime), which costs $0.23 per pound. (a) Write the balanced chemical equation for this process. (b) Determine the cost that the firm will incur from this use of slaked lime.
The vanadium in a sample of ore is converted to VO2+. The VO2+ ion is subsequently titrated with MnO4 in acidic solution to form V(OH)4+ and manganese(II) ion. The unbalanced titration reaction is MnO4(aq)+VO2++(aq)+H2O(l)V(OH)4+(aq)+Mn2+(aq)+H+(aq) To titrate the solution, 26.45 mL of 0.02250 M MnO4 was required. If the mass percent of vanadium in the ore was 58.1 %, what was the mass of the ore sample? Hint: Balance the titration reaction by the oxidation states method.
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