The bag is immersed in a 1 M sugar solution. The bag will lose sugar and the solution in it will become less concentrated. The bag will lose water and the solution in it will become more concentrated. There will be no change. The pH of a solution is 5.
Hydrocyanic acid is a weaker acid than acetic acid.
Hydrocyanic acid is more soluble in water than acetic acid. Cyanides are less soluble than acetates. Acetic acid is a weaker acid than hydrocyanic acid. A 0.20 M solution of the hypothetical weak acid HZ was found to have a pH of exactly 3.0. BaSO 4 to dissolve.