MCQ
When $pH$ of a solution decreases, its hydrogen ion concentration
  • A
    Decreases
  • B
    Increases
  • Rapidly increases
  • D
    Remains always constant

Answer

Correct option: C.
Rapidly increases
(c) $pH = - \log \,\,[{H^ + }]$

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

Similar questions

The set of quantum number for the $19^{th}$ electrons in chromium is
For a reaction $\mathrm{A} \rightarrow \mathrm{B}$, enthalpy of reaction is $-4.2\, \mathrm{~kJ}$ mol $^{-1}$ and enthalpy of activation is $9.6\, \mathrm{~kJ} \mathrm{~mol}^{-1}$. The correct potential energy profile for the reaction is shown in option.
For the electrochemical cell, $M|{M^ + }||{X^ - }|X,$ $E^\circ ({M^ + }|M)$$ = 0.44\;V$ $E^\circ (X|{X^ - }) = 0.33\;V$ From this data, one can deduce that
The process, in which no heat enters or leaves the system, is termed as
Acetic anhydride reacts with diethyl ether in presence of anhydrous $AlC{l_3}$ to form
Blood calcium level can be increased by the administration of
Other than the $X-$ ray diffractions, how could be the following pairs of isomers be distinguished from one another by

$[Cr(NH_3)_6] [Cr(NO_2)_6]$ and $[Cr(NH_3)_4(NO_2)_2] \,[Cr(NH_3)_2(NO_2)_4]$

When the hydrogen ion concentration $\left[ H ^{+}\right]$changes by a factor of $1000$ , the value of $pH$ of the solution $.........$.
Consider the reaction $N _{2} O _{4}( g ) \rightleftharpoons 2 NO _{2}( g )$

The temperature at which $K _{ C }=20.4$ and $K _{ P }=600.1,$ is ....... $K$. (Round off to the Nearest Integer).

[Assume all gases are ideal and $R =0.0831\, L\,bar \, K ^{-1} mol ^{-1}]$

Heating of $2-$ chloro $-1-$ phenylbutane with $EtOK/EtOH$ gives $X$ as the major product. Reaction of $X$ with $Hg(OAc)_2/H_2O$ followed by $NaBH_4$ gives $Y$ as the major product. $Y$ is