MCQ
A solution has $pH = 5$, it is diluted $100 $ times, then it will become
- ✓Neutral
- BBasic
- CUnaffected
- DMore acidic
✓
Answer
Correct option: A.
Neutral
(a) $pH = 5,$ means $[{H^ + }] = {10^{ - 5}}M.$
After dilution $[{H^ + }] = {10^{ - 5}}/100 = {10^{ - 7}}M$
$[{H^ + }]$ from ${H_2}O$ cannot be neglected.
Total $[{H^ + }] = {10^{ - 7}} + {10^{ - 7}} = 2 \times {10^{ - 7}}$
$pH = 7 - 0.3010 = 6.6990 = 7$(neutral).
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
Which one of the following indicates the correct order of atomic size
In the following reversible reaction $2S{O_2} + {O_2}$ $\rightleftharpoons$ $2S{O_3} + Q$ $Cal$ Most suitable condition for the higher production of $S{O_3}$ is
→For $Li^{+2}$ ion, $r_2 : r_5$ will be
→In a sigma bond
Which of the following compound would yield trialkylborane shown below when treated with $BH_3/THF$?
→Boric acid is acid because its molecule:
Chemistry is sometimes called as :
Correct order of electron affinity ?
Migratory aptitude of the following in decreasing order is
Metallic sodium does not react normally with: