Give four examples of heterogeneous catalysis.

Explanation

i. Production of Ammonia by Haber.s process uses Fe as a solid catalyst. .N_underline2(~g)+3 H_2 longrarrarrow Fe_2 rarrarrow 2 NH_M(g).
ii. Synthesis of .CH_3 OH. from .CO. and .H_3. using a mixture of copper, .ZnO. and .Cr_2 O. as catalyst.
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CO(g)+2 H_2(~g) Cu, ZnO, c_2 O_3rarrarrow cdot CH_3 OH(J)
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iii. Conversion of vegetable oils into fat.
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Vegetable oil +dotH_2(g) finds ditidect N i rarrarrow Fat
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