Answer to Question #170319 in General Chemistry for Ali Siddiqui

Question

a liquid x has a sour taste. it also changed the colour of blue litmus paper to red. describe the two different chemical tests and the results of each test to confirm that x is an acid

Answer 1

Acids have a sour taste due to a presence of H⁺. The same reason for changing color of a litmus paper: a reagent on a paper reacts with a proton (H⁺) to form a red colored substance. Based on the results of both tests it can be concluded that the unknown substance is an acid.