MCQ
When an acid or alkali is mixed with buffer solution, then $pH$ of buffer solution
- ✓Not changes
- BChanges slightly
- CIncreases
- DDecreases
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(Given: Molar mass of $Ag$ is $108\, g \,mol ^{-1}$ and that of $Cl$ is $35.5 \,g\, mol ^{-1}$ )
Assertion $A :$ The amphoteric nature of water is explained by using Lewis acid/base concept.
Reason $R$ : Water acts as an acid with $NH _{3}$ and as a base with $H _{2} S$.
In the light of the above statements choose the correct answer from the options given below :