Given below are two statements:
Statement (I) : A Buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities.
Statement (II) : Blood is naturally occurring buffer solution whose pH is maintained by concentrations.
In the light of the above statements, choose the correct answer from the options given below. [2024]
Both Statement I and Statement II are false
Statement I is true but Statement II is false
Statement I is false but Statement II is true
Both Statement I and Statement lI are true
(C) Acidic buffer: solution of weak acid and its salt with strong base.
This buffer is effective in the range
Basic buffer: solution of weak base and its salt with strong acid.
This buffer is effective in the range
The pH of an aqueous solution containing 1M benzoic acid and 1M sodium benzoate is 4.5. The volume of benzoic acid solution in 300 mL of this buffer solution is ________ mL. (given: log 2 = 0.3) [2024]
(100)
As total volume of mixture is 300mL, let V mL of 1M benzoic acid is mixed with (300-V) mL of 1M sodium benzoate solution.
Moles of benzoic acid = Molarityvolume
= 1MVml = Vmmol
Moles of sodium benzoate = Molarityvolume = 1M(300 - V)mL = (300 - V) mmol
A mixture of benzoic acid (weak acid) and sodium benzoate is an acidic buffer. For acidic buffer:
