(Make step by step and Justify each answer response). Hydrochloric acid and nitr
ID: 1024339 • Letter: #
Question
(Make step by step and Justify each answer response). Hydrochloric acid and nitric acid are important short acids for the chemical industry. Nitric acid is used in the manufacture of fertilizers, explosives, dyes, synthetic fibers, pickling of metals, etc .. On the other hand, hydrochloric acid is used in the flotation and processing of minerals, acidifying petroleum wells, regeneration exchange resins ion, manufacturing products for the food industry and processing of ferrous metals, etc .. Regarding the reactivity of these acids with metals, it is correct to say:
A) Hydrochloric acid is an oxidizing acid because it reacts with all metals gáshidrogênio and releasing metal salt.
B) Nitric acid is a non-oxidizing acid, because it reacts with any metal releasing gas hydrogen and metal salt.
C) The hydrochloric acid is an oxidizing acid because only is capable of reacting with metals that have potential reduction greater than zero.
D) The nitric acid is an oxidizing acid because its anion is reduced causing oxidation of the metals that have a potential reduction greater than zero.
E) Both hydrochloric acid and nitric acid are considered oxidizing acids
Explanation / Answer
3, The hydrochloric acid is non -oxidizing acid because it is capable of reacting with metals that have potential reduction lesser than zero. A metal is soluble in acid if it displaces H2 from solution, which is determined by the metal's standard reduction potential.
4, The nitric acid is an oxidizing acid, causing oxidation of the metals that have a potential reduction greater than zero. Example: Metals like Cu and Ag have a reduction potential greater than 0V. This means that H+ will no longer be able to oxidize these metals. But , the NO3 ion will serve as the oxidizing agent.
5. Hydrochloric acid is an non-oxidizing acid and nitric acid is an oxidizing acid.
Example. Copper is a rather unreactive metal, and has no reaction with concentrated hydrochloric acid. But dilute nitric acid can oxidize copper to Cu2+ ions, with the nitrate ions acting as the effective oxidant.
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