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Q.

The standard electrode potentials of some of the alkali metals are Li+/Li=3.05V;  Na+/Na=2.71V;  K+/K=2.93V

Alkali metals react with water according to the following reaction. (M = alkali metal) 2M+H2O2MOH+H2

It is found that Li reacts gently with water whereas potassium reacts violently with water. Which of the following statement(s) is/are correct regarding the above two experimental face?

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a

ΔG values have nothing to do with the kinetics of a reaction

b

The metal having large standard oxidation potential will have lesser reactivity

c

K has a low melting point, and the heat of reaction is sufficient to make it melt or even vapourize. This leads to exponential increase in its surface area

d

The ionization potential of K is greater than that of Li

answer is A, C.

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