Q.

Consider the following aqueous solutions and / assume 100% ionisation in electrolytesI. 0.1 M ureaII. 0.04 M Al2 (SO4)3III. 0.05 M CaCl2IV. 0.005 M NaCIThe incorrect statements regarding the above solution are

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a

freezing point will be lowest for solution I

b

freezing point will be highest for solution IV

c

boiling point will be highest for solution IV

d

vapour pressure will be highest for solution II

answer is A.

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Detailed Solution

According to colligative properties, freezing point will be highest for solution IV due to lower concentration of NaCl
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Consider the following aqueous solutions and / assume 100% ionisation in electrolytesI. 0.1 M ureaII. 0.04 M Al2 (SO4)3III. 0.05 M CaCl2IV. 0.005 M NaCIThe incorrect statements regarding the above solution are