A cotton swab is dipped into concentrated hydrochloric acid (producing hydrogen chloride gas) while a second on is dipped into concentrated aqueous ammonia (producing ammonia gas). Both cotton swabs ...

The more concentrated the solution of an acid ... A solution of 1 g/dm 3 hydrochloric acid has a pH of 1.6. Predict its pH when it is diluted to 0.1 g/dm 3. The hydrogen ion concentration ...