Question

Spermine (structure shown) is a compound isolated from sperm. Which of the following statements correctly describes an aqueous solution of spermine?
NH2(CH2)3NH(CH2)4NH(CH2)3NH2

Question 2 options:

A)

The hydroxide ion concentration in the solution would be greater than that in pure water.
B)

The hydronium ion concentration in the solution would be greater than that in pure water.
C)

The solution would be acidic.
D)

The pH of the solution would be equal to that of pure water.

Answer 1

Answer:

A) The hydroxide ion concentration in the solution would be greater than that in pure water.

Explanation:

Spermine has four amino groups. In water, these amino groups will be protonate -In NH₂⁺ or NH₃⁺- decreasing the H⁺ concentration and, by water equilibrium, increasing OH⁻ concentration.

Thus, in an aqueous solution of spermine the hydroxide ion concentration in the solution would be greater than that in pure water.

I hope it helps!

Answer 2

Answer:

The correct answer is option A)  The hydroxide ion concentration in the solution would be greater than that in pure water.

Explanation:

Spermine is basic in nature as it contains di-amine group (NH2), which is basic in nature that is, it easily gives off electrons.

Thus being basic spermine solution will have more concentration of Hydroxide ion [OH-].