MHT CET 2024 Chemistry question
Assuming complete ionisation, arrange the following solutions in order of increasing osmotic pressure a) 0.5 m b) 0.5 m KCl c) 0.5 m d) 0.1 m
Answer: (A)
Solution
Osmotic pressure is a colligative property, , so for dilute solutions at the same it is proportional to concentration (molal concentration used as a measure). With complete ionisation: (a) Li_2SO_4 \rightarrow 2Li^+ + SO_4^{2-}, , so
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