234) What is the volume needed to make normality of the solution 3N, prepared by mixing 250 mL 6M HCl and 350 mL 8M HNO₃?

235) On dilution of a solution formed from CH₃COONH₄ and CH₃COOH:

236) Which of the following indicators is appropriate in the titration of NH₄OH and strong acid?

237) What will be the mole fraction of acetone in the solution formed by 1.8 gm of water and 2.9 gm of acetone?

238) Value of pK_a for acetic acid at 25^oC is 4.75. What will be the pH value of the solution in which ratio of concentration of sodium acetate and acetic acid is 10?