Which of the following will not function as a buffer solution? (i) ${\rm{NaCl}}$ and ${\rm{NaOH}}$ (ii) ${\rm{NaOH}}$ and ${\rm{N}}{{\rm{H}}_4}{\rm{OH}}$ (iii) ${\rm{C}}{{\rm{H}}_3}{\rm{COON}}{{\rm{H}}_4}$ and ${\rm{HCl}}$ (iv) Borax and boric acid

NEET UG CHEMISTRY MCQ: Equilibrium

1 Easy

1 of 1

Analyzing +4 | -1

Which of the following will not function as a buffer solution?

(i)

\mathrm{NaCl}

and

\mathrm{NaOH}

(ii)

\mathrm{NaOH}

and

\mathrm{N}{\mathrm{H}_4}\mathrm{OH}

(iii)

\mathrm{C}{\mathrm{H}_3}\mathrm{COON}{\mathrm{H}_4}

and

\mathrm{HCl}

(iv) Borax and boric acid

View answer and explanation

Correct option: A

(i), (ii), (iii)

Option A ((i), (ii), (iii)) is correct because NaCl and NaOH, NaOH and NH4OH, and CH3COONH4 and HCl do not form buffer solutions; a buffer requires a weak acid/base and its conjugate.

More Questions from Equilibrium

Practice All Chapter MCQs →

Given below are two statements: One is labelled as Assertion A and the other labelled as Reason R.
Assertion A: During the boiling of water having temporary hardness,

Mg{(HC{O_3})_2}

is converted to

MgC{O_3}

.
Reason R The solubility product of

Mg{(OH)_2}

is greater than that of

MgC{O_3}

.
In the light of the above statements, choose the most appropriate answer from the options given below At a certain temperature,

K_{\mathrm{P}}

for the dissociation of solid

\mathrm{CaCO}_3

4.5 \times 10^{-2}

atm and for the reaction

\mathrm{C}(\mathrm{s})+\mathrm{CO}_2(\mathrm{g}) \rightleftharpoons 2 \mathrm{CO}(\mathrm{g}),

the

K_{\mathrm{P}}

value is

2.0 \mathrm{~atm}.

The pressure of carbon monoxide at this temperature, when solid carbon

\mathrm{CaO}

and

\mathrm{CaCO}_3

are mixed together and allowed to attain equilibrium is Phenolphthalein shows … in acid medium. At the state of dynamic equilibrium, for solute

+

solvent

\leftrightharpoons

solution. For

\mathrm{PC}{\mathrm{l}_5}\leftrightharpoons\mathrm{PC}{\mathrm{l}_3} + \mathrm{C}{\mathrm{l}_2}

, initial concentration of each reactant and product is 1 M. If

{K_{\mathrm{eq}}} = 0.41

then Select the

\mathrm{p}{K_a}

value of the strongest acid from the following