Which of the following titrations results in a basic solution at the equivalence point? Select one:...

Which of the following titrations results in a basic solution at the equivalence point? Select one:

A. NaCN titrated with HCl

B. HCl titrated with NH3

C. HCN titrated with NaOH

D. HCl titrated with NaOH

Solutions

Expert Solution

A. NaCN titrated with HCl

NaCN + HCl --------> NaCl + HCN

Formation of neutral salt NaCl and weak acid HCN = so acidic medium

B. HCl titrated with NH3

HCl + NH3 --------> NH4Cl

Formation of salt of strong acid and weak base = acidic medium

C. HCN titrated with NaOH

HCN + NaOH -------> NaCN + H2O

Formation of salt of strong base NaOH and weak acid HCN = basic medium

D. HCl titrated with NaOH

HCl + NaOH -------> NaCl + H2O

Formation of neutral salt NaCl and water = neutral medium

Correct option (C)

queen_honey_blossom answered 1 year ago

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