Which of the following solutions containing weak acid and salt of its conjugate base has maximum buffer capaity?

The pH of a buffer solution containing a weak acid (pK_(a)) and its salt is :

Statement: A micture of the solution of a weak acid and its conjugates base acts as a good buffer. Explanation: The ratio of the conjugates base acid in the mixture does not change substantially when small amount of acids or alkalines are added to the buffer.

Assertion: 0.1 M NaCN+0.05 M HCl solution on mixing in equal volume forms a buffer solution. Reason : The solution after mixing contains a weak acid and its conjugate base and thus acts as buffer.

Assertion: 0.1 M NaCN+0.05 M HCl solution on mixing in equal volume forms a buffer solution. Reason : The solution after mixing contains a weak acid and its conjugate base and thus acts as buffer.

Which of the following is correct for the solution of the salt of weak acid & weak base ?

Which of the following is correct for the solution of the salt of weak acid & weak base ?

A solution containing a weak acid and its conjugate base acts as an acidic buffer. In a buffer the dissociation of the weak acid is suppressed by its conjugate base. (K_(1),K_(2), and K_(3) of H_(3)PO_(4) , are 10^(-4), 10^(-8), 10^(-13) respectively What is the pH of a solution obtained by mixing 100ml of 0.1 MH_(3) PO_(4) , and 150ml of 0.IM NaOH

A solution capable of maintaining its pH relatively constatn, when either excess acid or excess base is added, is said to be buffered While it is not usually considered a buffered solution, a concentrated solution (10^(-2) M and higher) of a strong acid or stong base is buffered against large changes in pH when acids or bases are added. Buffered solutions are usually those containing a wealk acid and a salt of that weak acid or a weak base and the salt of that weak base. For example a solution containing HAc and NaAC resists large change in pH when acid or alkali is added. For a buffer solution Buiffer capacity is defined as the number of moles of a strong acid or a strong base that causes 1 of the buffer to undergo a 1 unit change in pH. Buffer capacity is maximum when the molar ratio of the two components is unity and the buffer solution is considerred good. Which solution is not a buffer solution ?