Question

D Question 6 1 pts When equal volumes of the solutions are combined, which of the following produces a solution with the largest buffer capacity? O 10MHNO, and 10M NOH O 10M NaF and 10M NOH 1.0MHF and 10M NAOH O 20 MHNO, and 20 M LINO, O 10M HF and 1.0 MUF

Answer 1

Buffer is the solution that restsis change in pH upon addition of small amount of strong acid/strong base.

Acid or base shoud be waek & its conjugate with strong base/acid shoud be present.

First 4 options has strong acid/base so they are not buffer solution.

* For largest buffer capacity, equal amount of weak acid/base shoud be present with equal quantity of it's strong strong conjugate.

Buffer A solution which resist in change in pH upon in acid addition of small amorent of strong strong Buffen base Basic buffer Aidic buffer salt with streng base * weak acid and * weak base and its its salt with strong base Buffer Capacety! Amount of strong acid or strong bese to be added to 2 litre of buffer solution to change pH by turit. * Buffer capacity maximize ze when equal amount of weak aced of its salt or weak base & its aced is added. a) IM HNO3 + 1M NG OH strong base Strong aced → 94 is not buffer solution b) IM NaF im NaOH >9t is not buffer sololeon strong, base salt IMHE & IM NaOH. wleak acid Strong base = It is not beeffer sobieleen d) QM MH MO3 + 2M E NO streng aced salt It is not buffer solution G e) IMHF weak acid + im if It is differ solution salt of weekaced (HF) with strong bus (Lion) CS Scanned with CamScanner

* Amound weak aceed (HF) = 1M = amerent of its salt of cii F) 2 Best buffer conclition fullfilled Ans (e) f-OMHF and lomu F CS Scanned with CamScanner