Which of the following on mixing with water does not form a Buffer Solution?
Borax
As we learnt,
When any weak acid or base is reacted with a base or acid respectively, in unequal amounts , then a buffer solution is obtained.
Out of the given options, HCl and NaOH are both strong and hence the solution obtained will not behave as a buffer.
Hence, the correct answer is Option (4)
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