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Class XI Chemistry Equilibrium 3
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Question 1
How many litres of water must be added to 1 litre of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2?
Question 2
The pKa of a weak acid, HA, is 4.80. The pKb of a weak base, BOH, is 4.78. The pH of an aqueous solution of the corresponding salt, BA, will be
Question 3
What is the conjugate base of OH-?
Question 4
pKa of acetic acid is 4.74, which implies that -
Question 5
An acid-base indicator which is a weak acid has a pKa value = 5.45. At what concentration, ratio of sodium acetate to acetic acid would the indicator show a colour half-way between those of its acid and conjugate base forms ?
[pKa of acetic acid = 4.75, log 2 = 0.3]
Question 6
At a temperature under high pressure Kw = 10–10, A solution of pH 5.4 under these conditions is said to be -
Question 7
A monoprotic acid in a 0.1 M solution ionizes to 0.001%. Its ionisation constant is -
Question 8
In the system AB (s) 
A(g) + B(g) doubling the quantity of AB (s) would -
A(g) + B(g) doubling the quantity of AB (s) would - - 514 attempts
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Nov 9JEE & BITSAT
