Test:173 QNo:9

for the reaction
5A+3B[eq]6C+D, K_c has the units

2 Answers

friends always the value of K is dimensionless but why here is it not so????

no , karan. its not so.

K_c = [ mol - litre^-1 ] ^{n_p - n_r},

where n_p denotes no. of gaseous moles of product and n_r denotes no. of gaseous moles of reactants.

so, here , unit of the reaction :

5A+3B â†’ 6C+D , K_c has units = [ mol - litre^-1 ] ^-1 = litre - mol ^-1.

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