Question

Statement-1 : Lower aldehyde and ketones are soluble in
water but the solubility decreases as molecular mass
increases.
Statement-2 : Aldehydes and ketones can be distinguished
by Tollen’s reagent.

Answer 1

ANSWER

statement 1 is true

the aldehydes have an oxygen atom that can form hydrogen bond with the hydrogen atoms of water so lower aldehydes are soluble in water

but as the chain length increases, the hydrophobic part (the alkyl chain) dominates over the hydrophilic part (the polar -CHO group)

so higher molecular weight aldehydes are insoluble in water but lower molecular weight aldehydes are easily soluble in water

the statement 2 is also correct because aldehydes form silver mirror with tollens reagent but ketones do not

we also see that statement 2 has nothing to do with the explanation of statement 1 so option B is correct

Answer 2

Both the statements are correct but statement 2 doesn't describe the statement 1.

Explanation:

• Aldehydes and ketones are the carbonyl compounds.

• They are having the =C=O group in it.

• This carbonyl oxygen present in the carbonyl group forms hydrogen bond with the water molecule which is the hydrophilic part.

• The alkyl chain is the hydrophobic part.

• As long as the hydrogen bonding can surpass the hydrophobic effect of the alkyl chain, the aldehyde or ketone is soluble in water.

• But as the alkyl part surpass the hydrogen bonding effect, it becomes insoluble in water.

• The aldehydes and ketones can be distinguished by the Tollens reagent.

• But this has no relation with the 1st part.

• So, the statements are true, but the statement 2 is not the Explanation of statement 1.

For more information about aldehyde solubility,

https://brainly.in/question/9213845

How does the solubility of aldehydes and ketones change in water as the number of carbon atoms changes?

https://brainly.in/question/7998086

Lower member of aldehyde is more soluble in water why? - Brainly.in