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Explain the following : (i) Amino acid...

Explain the following :
(i) Amino acids behave like salts rather than simple amines or carboxylic acids.
(ii) The two strands of DNA are complementary to each other.

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(i) Due to zwitter ion formation amino acids behave like salts.

(ii) Two stransd of DNA are complementary to each because H-bonds are formed by specific pair of bases i.e., Adenine is linked with thymine by two H-bond and guanine is linked with cytosine by three H-bonds.
(iii) Reaction of glucose with `Br_2` water indicates that aldehylic group is present in open structure of glucose.
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Amino acids behave like salts rather than simple amines or carboxylic acids. Explain.

Amino acids behave like salts rather than simple amines or carboxylic acids. This behavior is due to the presence of both acidic (COOH) and basic (-NH_(2)) group in the same molecule. In aqueous solution, the carboxyl group can lose a proton and amino group can accept a proton, giving rise to a dipolar lon known as Zwitter ion. Zwitter ion exists.

Give reasons for the following The mono-amino carboxylic acids have two pK_(a) values.

Give the plausible explanation for the following: (i) Glucose doesn't give 2,4-DNP test. (ii) The two strands in DNA are not identical but are complementary (iii) Starch and cellulose both contain glucose unit as monomer. yet they are structurally different.

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Two angles are in the ratio 4:5 Find the angles if they are (i) complementary (ii) supplementary to each other.

Explain the following (i) H_3 PO_3 is a dibasic acid. (ii) Phosphine has lower boiling point than ammonia.

Assign reasons for the following: (i) Formic acid and chloroacetic acid are stronger than acetic acid. (ii) Ethylamine is more basic tham ammonia.

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