Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Consider the following solutions.
(i) 
(ii) 
(excess) +HCl
(iii) 
(iv) 
(v) 
(vi) 
(vii) 
How many of them would act as a buffer solution?
Text Solution
Verified by ExpertsThe correct answer is:
C
Among the given solution, only two, i.e. (ii) and (iv) act as a buffer solution.
(ii) 
(Excess) 
(Here, 
is present in an excess amount)
So, the mixture contains weak base and salt of strong acid and weak base 
which acts as a basic buffer solution.
(iv) NaCN is a salt of weak acid and strong base and HCN is a weak acid. Therefore, these can act as a buffer.
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