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  4. Van't Hoff factor of Ca(NO3)2 is:

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Q. Van't Hoff factor of $Ca(NO_3)_2$ is:

Solutions

Solution:

$Ca \left( NO _{3}\right)_{2} \rightleftharpoons Ca ^{2+}+2 NO _{3}^{-}$

Its van't hoff factor is 3 because it furnishes three ions per formula unit.