0.04 M Na 2 SO 4 solution is isotonic with 0.1 M glucose at the same temperature. What is the apparent degree of dissociation of Na 2 SO 4 ?

Question

0.04 M Na 2 ​ SO 4 ​ solution is isotonic with 0.1 M glucose at the same temperature. What is the apparent degree of dissociation of Na 2 ​ SO 4 ​ ?

TestHub · Accepted Answer

At the same temperature, isotonic solutions will have same concentrations. $Na_{2} SO_{4} ⇌ 2 N a^{+} + SO_{4}^{2 -}$

$1 - α$ $2 α$ $α$

$C_{N a_{2} S O_{4}} = C_{g l u cose}$

$0.04 (1 + 2 α) = 0.1$

$α = 0.75$

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