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Question

Van't Hoff's factor of aq. $${ K }_{ 2 }S{ O }_{ 4 }$$ at infinite dilution has value equal to:


A
1
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B
2
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C
3
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D
Between 2 and 3
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Solution

The correct option is C $$3$$
$${ K }_{ 2 }S{ O }_{ 4 }\longrightarrow 2{ K }^{ + }+S{ O }_{ 4 }^{ 2- }$$
At infinite dilution, each molecule gives $$3$$ ions, hence, the Van't Hoff's factor, $$i=3$$.

Chemistry

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