Question

Few reactions of industrial importance are listed below. Which of the following catalysts is not correctly matched with the reaction?
(A) Haber's process : Finely divided ${\text{Fe}} + {\text{Mo}}$as promoter
(B) Contact process ${{\text{V}}_2}{{\text{O}}_5}$
(C) Ostwald's process ${\text{F}}{{\text{e}}_2}{{\text{O}}_3}$
(D) None of these

Answer 1

Hint : A catalyst is a material that allows a chemical reaction to continue at a quicker rate or under different conditions (such as at a lower temperature) than would otherwise be feasible. It's a substance that causes or accelerates major change or activity. The industrialisation of the area was sparked by that stream.

Complete Step By Step Answer:
The Haber process, commonly known as the Haber–Bosch process, is an artificial nitrogen fixation technique that is now used to produce ammonia in industry. It was created in the first decade of the twentieth century by German scientists Fritz Haber and Carl Bosch, and is named after them. Under high temperatures and pressures, the process transforms atmospheric nitrogen (${N_2}$) to ammonia ($N{H_3}$) via a reaction with hydrogen (${H_2}$) using a metal catalyst Fe and Mo
${{\text{N}}_2} + 3{{\text{H}}_2} \rightleftharpoons 2{\text{S}}{{\text{O}}_{2(\;{\text{g}})}} + {{\text{O}}_{2(\;{\text{g}})}} \rightleftharpoons 2{\text{S}}{{\text{O}}_{3(\;{\text{g}})}}:\Delta H = - 197\;{\text{kJ}} \cdot {\text{mo}}{{\text{l}}^{ - 1}}ns 2{\text{N}}{{\text{H}}_3}\quad \Delta {H^\circ } = - 91.8\;{\text{kJ}}/{\text{mol}}$
The current way of manufacturing sulfuric acid at the high concentrations required for commercial applications is the contact process. The catalyst for this reaction was originally platinum; however, because platinum is prone to interacting with arsenic impurities in the sulphur feedstock, vanadium(V) oxide (${{\text{V}}_2}{{\text{O}}_5}$) is now favoured.
The Ostwald process is a chemical reaction that produces nitric acid ($HN{O_3}$). Wilhelm Ostwald invented the method, which he patented in 1902. The Ostwald process is a cornerstone of contemporary chemical manufacturing, and it provides the primary raw material for the most prevalent form of fertiliser. The Ostwald process is historically and practically linked to the Haber process, which provides the required raw ingredient, ammonia ($N{H_3}$).
Catalyst used here is Platinum
$2{\text{N}}{{\text{H}}_3}(\;{\text{g}}) + 4{{\text{O}}_2}(\;{\text{g}}) + {{\text{H}}_2}{\text{O}}({\text{l}}) \to 3{{\text{H}}_2}{\text{O}}({\text{g}}) + 2{\text{HN}}{{\text{O}}_3}({\text{aq}})(\Delta H = - 740.6\;{\text{kJ}}/{\text{mol}})$
Hence option C is correct.

Note :
The highly oxidising conditions of the Ostwald process produce large amounts of volatile platinum oxides, especially platinum dioxide, which are carried away by the gas flow and can result in significant precious metal losses over the length of normal process cycles spanning several months.