Verified Solution • 2025–26 Session
moderate
QAIPM-2012-Ch-1722: NEET 2012 Chemistry - Class 11 AIPM-2012-Ch-1722 Solution: Identify the alloy containing a non-metal as a constituent in…
Identify the alloy containing a non-metal as a constituent in it. Invar Steel Bell metal Bronze
Multiple Choice Options
- A these give unionised acid or base on reaction with added acid or alkali
- B acids and alkalies in these solutions are shielded from attack by other ions
- C they have large excess of H + or OH _ ions
- D they have fixed value of pH
Step-by-Step Verified Solution
For this example,
CH 3 COOH _ CH 3 COO � + H + ;
CH 3 COONa _ CH 3 COO � + Na +
when few drops of HCl are added to this buffer,
the H + of HCl immediatly combine with
CH 3 COO � ions to form undissociated acetic
acid molecules. Thus there will be no H + ions to
combine with CH 3 COO � ions to form
undissociated acetic acid molecules. Thus there
will be no appreciable change in its pH value.
Like wise if few drops of NaOH are added, the
OH � ions will combine with H + ions to form
unionised water molecule. Thus pH of solution
will remain constant.