Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which of the following solutions of salts are neutral?
(i) KBr (ii) \(NaNO_{2}\) (iii) KF (iv) \(NH_{4}NO_{3}\) (v) NaCl

  • A.(ii) and (iii)
  • B.(i) and (iv)
  • C.(i) and (v)
  • D.(iv) and (v)
  • E.(iii) and (v)

Answer: C

The neutral solutions are (i) and (v): KBr and NaCl.

A salt of a strong acid and a strong base does not hydrolyse, so its solution is neutral. KBr (from KOH and HBr) and NaCl (from NaOH and HCl) are such salts.

NaNO2 and KF come from weak acids (HNO2, HF), so their anions hydrolyse to give basic solutions. NH4NO3 comes from a weak base, so its cation hydrolyses to give an acidic solution.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.