Two buffer solutions, A and B , each made with acetic acid and sodium acetate differ in their pH by one unit, A has salt : acid = x : y , B has salt : acid = y : x . If x y , then the value of x : y

Question

Two buffer solutions, A and B , each made with acetic acid and sodium acetate differ in their pH by one unit, A has salt : acid = x : y , B has salt : acid = y : x . If x > y , then the value of x : y is -

TestHub · Accepted Answer

Two buffers differ in pH by 1 unit.

A: salt:acid = x:y, B: salt:acid = y:x, x > y

Formula:

$p H = p K a + lo g \frac{[ S a lt ]}{[ A c i d ]}$

Logic:

$p H_{A} - p H_{B} = 1 ⟹ lo g (x / y) - (- lo g (x / y)) = 2 lo g (x / y) = 1$

$lo g (x / y) = 0.5 ⟹ x / y = 1 0^{0.5} \approx 3.17$

Chemistry - Ionic Equilibrium Question with Solution | TestHub

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