Concept explainers
(a)
Interpretation: The balanced equation has to be given for the reaction of hydrazine with
Concept Introduction: Hydrazine is a colorless liquid and is produced by oxidation of ammonia. Hydrazine is a base and is a strong reducing agent.
It is used in treating waste water from chemical plants. It is also used to remove dissolved oxygen in water in electric generating plants. Hydrazine acts as a reducing agent and reduces the amount of dissolved oxygen. Otherwise, this dissolved oxygen can corrode the metals of pipes used in the plants.
Balanced chemical equation of a reaction is written according to law of conservation of mass.
(b)
Interpretation: It should be calculated that the mass of
Concept Introduction: Hydrazine is a colorless liquid and is produced by oxidation of ammonia. Hydrazine is a base and is a strong reducing agent.
It is used in treating waste water from chemical plants. It is also used to remove dissolved oxygen in water in electric generating plants. Hydrazine acts as a reducing agent and reduces the amount of dissolved oxygen. Otherwise, this dissolved oxygen can corrode the metals of pipes used in the plants.
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Chapter 21 Solutions
Chemistry & Chemical Reactivity
- The amount of sodium hypochlorite in a bleach solution can be determined by using a given volume of bleach to oxidize excess iodide ion to iodine; ClO- is reduced to Cl-. The amount of iodine produced by the redox reaction is determined by titration with sodium thiosulfate, Na2S2O3; I2 is reduced to I-. The sodium thiosulfate is oxidized to sodium tetrathionate, Na2S4O6. In this analysis, potassium iodide was added in excess to 5.00 mL of bleach (d=1.00g/cm3) . If 25.00 mL of 0.0700 M Na2S2O3 was required to reduce all the iodine produced by the bleach back to iodide, what is the mass percent of NaClO in the bleach?arrow_forwardThe reaction of calcium hydride, CaH2, with water can be characterized as a Lewis acid-base reaction: CaH2(s)+2H2O(l)Ca(OH)2(aq)+2H2(g) Identify the Lewis acid and the Lewis base among the reactants. The reaction is also an oxidation-reduction reaction. Identify the oxidizing agent, the reducing agent, and the changes in oxidation number that occur in the reaction.arrow_forwardPhosphorous acid, H3PO3, is oxidized to phosphoric acid, H3PO4, by nitric acid, which is reduced to nitrogen monoxide, NO. Write the balanced equation for this reaction.arrow_forward
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