IIT JAMChemistryChemical and Phase EquilibriaNumerical+2 / −0
A 1.0 L solution is prepared by dissolving 2.0 g of benzoic acid and 4.0 g of sodium benzoate in water. The pH of the resulting solution is .
(rounded off to one decimal place)
Numerical answer
View written solutionFree
Correct answer: 4.4, 4.5
More from Chemical and Phase Equilibria
- The total vapour pressure of an ideal binary liquid mixture of benzene and toluene is 0.3 bar. The vapour pressure of pure benzene is 0.5 bar and that of toluene is 0.2 bar. The mole fraction of benzene in this mixture is …2024 · Numerical
- Identify the reaction for which, at equilibrium, a change in the volume of the closed reaction vessel at a constant temperature will not affect the extent of the reaction.2024 · MCQ
- The vapor pressure of a dilute solution of a non-volatile solute and the vapor pressure of the pure solvent at the same temperature are and , respectively. (Assume that the vapor phase…2023 · MCQ
- The volume of water (in mL) required to be added to a 100 mL solution (aq. 0.1 M) of a weak acid (HA) at 25 °C to double its degree of dissociation is [Given: of HA at 25 °C = ]2023 · MCQ
- The following diagram is obtained in a pH-metric titration of a weak dibasic acid (H₂A) with a strong base. The point that best represents [HA⁻] = [A⁻²] is Includes diagram2023 · MCQ
- The standard Gibbs free energy change for the reaction H_{2}O (g) → H_{2} (g) + ½ O_{2} (g) at 2500 K is +118 kJ mol^{-1}. The equilibrium constant for the reaction is [Given: R = 8.314 J K^{-1} mol^{-1}]2022 · MCQ
- The pH of an aqueous buffer prepared using CH_{3}COOH and CH_{3}COO^{-}Na^{+} is 4.80. The quantity is . *(round off to…2022 · Numerical
- At constant temperature, 6.40 g of a substance dissolved in 78 g of benzene decreases the vapor pressure of benzene from 0.125 atm to 0.119 atm. The molar mass of the substance is g mol^{-1}. *(round off to one…2022 · Numerical