Concentration C N^ - in 0.1 ,M ,HCN is [ K_a = 4 10^ - 10 ] - Vidyadip

MCQ

Concentration $C{N^ - }$ in $0.1\,M\,HCN$ is $[{K_a} = 4 \times {10^{ - 10}}]$

A
$2.5 \times {10^{ - 6}}M$
B
$4.5 \times {10^{ - 6}}M$
✓
$6.3 \times {10^{ - 6}}M$
D
$9.2 \times {10^{ - 6}}M$

✓

Answer

Correct option: C.

$6.3 \times {10^{ - 6}}M$

c
Concentration of $CN ^{-1} \sqrt{ K _{ a } \cdot C }$

$=\sqrt{4 \times 10^{-10} \times 0.1}$

$=6.3 \times 10^{-6} \,M$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 6.2. Equilibrium - II (icon Equilibrium)→6.2. Equilibrium - II (icon Equilibrium) — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

The number of waves made by a Bohr electron in an orbit of maximum magnetic quantum number $3$ is

A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number ?

Sodium ethoxide is a specific reagent for

Which of the following statements regarding a chemical equilibrium is wrong

Ethylene possess

Amongst the following amino acids, the $(R)$ - enantiomer is represented by

The degree of dissociation $(\alpha )$ of $PCl_5$ obeying the equilibrium; is $PC{l_5}\, \rightleftharpoons \,PC{l_3}\, + \,C{l_2}$ related to the pressure at equlibrium by

Choose the correct altenatives. The number of unpaired electrons in an atom of

The effect of increasing the pressure on the equilibrium $2A + 3B$ $\rightleftharpoons$ $3A + 2B$ is

In the reaction,
N₂(g) + O₂(g) ⇌ 2NO(g) − 180.7 kJ,
on increasing the temperature, the production of NO: