Remember that an acid reacts with a metal to produce hydrogen gas.

Using a measuring cylinder, measure 5 cm 3 of hydrochloric acid and add to a test-tube. Repeat step 1 with ethanoic acid into a separate test-tube. Add 5 drops of Universal Indicator to each test ...

THE catalytic effect of small amounts of pyridine in the reaction between thionyl chloride and carboxylic acids is well known; Carré and Libermann 1 have shown further that it is of great ...