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The D-And-f-Block Elements

Question
CBSEENCH12010194
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Name the two groups into which phenomenon of catalysis can be divided. Give an example of each group with the chemical equation involved.

Solution

The phenomenon of catalysis can be divided into two groups.

Homogeneous catalyst: In the homogeneous catalyst is present in the same phase as the reactant, it is called a homogeneous catalyst and this type of catalyst is called is called homogeneous catalysis.

For example: 2SO2(g) + O2(g)   rightwards arrow with space space space space space NO space left parenthesis straight g right parenthesis space space space space space on top space 2SO3(g)

Heterogeneous catalyst: In the heterogeneous catalyst present in a different phase as a reactant, it is called a heterogeneous and this type of catalyst is called heterogeneous catalysis.

For example: N2(g) + 3H2(g) rightwards arrow with space space space space Fe space left parenthesis straight s right parenthesis space space space space space on top space2NH3(g)

Some More Questions From The d-And-f-Block Elements Chapter

Why is the highest oxidation state of a metal exhibited in its oxide or fluoride only?

Which is a stronger reducing agent Cr2+ or Fe2+ and why?

Explain why Cu+ ion is not stable in aqueous solutions?

Actinoid contraction is greater from element to element than lanthanoid contraction. Why?

On what ground can you say that scandium (Z = 21) is a transition element but zinc (Z = 30) is not?

The outer electronic configuration of copper is 3d10 4s1, yet it is considered transition element. Why?

Why the melting points of transition elements are high?

Why Zn, Cd and Hg are not regarded as transition elements?

Name the first element of 3rd transition series.

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