jee_main_2026_28_january_morning - Equilibrium Topics

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QUESTION #56 Buffer Solutions
Consider a weak base 'B' of mathrmpK_b = 5.699. 'x' mL of 0.02mathrm~M HCl and 'y' mL of 0.02mathrm~M weak base 'B' are mixed to make 100mathrm~mL of a buffer of pH 9 at 25^circmathrmC. The values of 'x' and 'y' respectively are: [Given: log 2 = 0.3010, log 3 = 0.4771, log 5 = 0.699]
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QUESTION #75 pH of Weak Acids
Consider the dissociation equilibrium of the following weak acid mathrmHA rightleftharpoons mathrmH^+(aq) + mathrmA^-(aq) If the mathrmpK_a of the acid is 4, then the pH of 10mathrm~mM HA solution is _____. (Nearest integer) [Given : The degree of dissociation can be neglected with respect to unity]
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)
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