MCQ
The ${H^ + }$ ion concentration is $1.0 \times {10^{ - 6}}$ mole/litre in a solution. Its $pH $ value will be
- A$12$
- ✓$6$
- C$18$
- D$24$
✓
Answer
Correct option: B.
$6$
(b) $[{H^ + }] = 1.00 \times {10^{ - 6}}$ mole/litre
$pH = - \,\log \,\,[1.00 \times {10^{ - 6}}]$; $pH = 6.$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
An electron instially present in an excited state of $H$ atom is further excited to another energy level by an incident photon. It releases $10$ photons while coming back to ground state out of which $7$ have higher energy than incident photon. The electron was instially present in
→Two beakers $A$ and $B$ containing pure water and aqueous solution are shown. What will be observed gradually with passage of time ?
→How many .................. $\mathrm{gm}$ $\mathrm{KOH}$ grams of caustic potash required to completely neutralise $12.6\, gm$ $HN{O_3}$
→No. of electron in penultimate shell of $d-$ block elements
→Two solutions of $KNO_3$ and $CH_3COOH$ are prepared separately. Molarity of both is $0.1\, M$ and osmotic pressures are $P_1$ and $P_2$ respectively. The correct relationship between the osmotic pressures is :-
→The correct set of four quantum numbers for the valence electron of rubidium atom $(Z=37)$ is:
→Which method can be used to distinguish
→$[Co(NH_3)_6 ][Cr(NO_2)_6 ]$ and $[Cr(NH_3)_6][Co(NO_2)_6]$
The element which can displace three other halogens from their compound is
The aqueous solution of $AlC{l_3}$ is acidic due to the hydrolysis of
→In the given reaction :
→$C{H_3}CHO\mathop {\xrightarrow{{(i)\,NaCN/HCl}}}\limits_{(ii)\,{H_2}O/{H^ \oplus }/\Delta } (A)\mathop {\xrightarrow{{Fenton}}}\limits_{reagent} (B)$
$(B)$ will be :