The pH value of 1.0 10^ - 8 ,M ,HCl solution is less than 8 becau… - Vidyadip

MCQ

The $pH $ value of $1.0 \times {10^{ - 8}}\,M\,HCl$ solution is less than $8$ because

A
$HCl$ is completely ionised at this concentration
B
The ionization of water is negligible
✓
The ionization of water cannot be assumed to be negligible in comparison with this low concentration of $HCl$
D
The $pH$ cannot be calculated at such a low concentration of $HCl$

✓

Answer

Correct option: C.

The ionization of water cannot be assumed to be negligible in comparison with this low concentration of $HCl$

(c)As the solution is acidic, $pH < 7$. This is because $[{H^ + }]$ from ${H_2}O$ cannot be neglected in comparison to ${10^{ - 8}}$.

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 simplest formula of a compound containing $50\%$ of element $X$ (atomic mass $10$) and $50\%$ of element $Y$ (atomic mass $20$) is

The wavelength of a spectral line for an electronic transition is inversely related to :

Which of the following alkenes on ozonolysis give a mixture of ketones only?

$2 \mathrm{MnO}_4^{-}+\mathrm{bI}^{-}+\mathrm{cH}_2 \mathrm{O} \rightarrow \mathrm{xI}_2+\mathrm{yMnO}_2+\mathrm{zOH}^{-}$

If the above equation is balanced with integer coefficients, the value of $z$ is____

First and second excitation potentials of hydrogen atom (in $eV$) would be respectively

Correct sequence of ionic radii is:

The correct statements about compounds $A, B$ and $C$ is/are

Triad - $I\, [N^{3-} , O^{-2}, Na^+ ]$
Triad - $II\, [ N^+ , C^+ , O^+ ]$
Choose the species of lowest $IP$ from triad-$I$ and highest $IP$ from triad-$II$ respectively

For the reaction, $C{O_{(g)}} + C{l_{2(g)}}$ $\rightleftharpoons$ $COC{l_{2(g)}}$ the ${K_p}/{K_c}$ is equal to

At ${27\,^o}C,$ one mole of an ideal gas is compressed isothermally and reversibly from a pressure of $2 $ atm to $10 $ $atm$. The values of $\Delta E$ and $q $ are $(R = 2)$