Question

1) nature of the acids and bases
2) classifying substances into acids, bases using indicators.
3) testing of acid and bases​

Answer 1

Answer:

1) Acids are substances that are capable of donating a proton, and bases are substances capable of accepting a proton. So, in the example above, HCl acts as a Brønsted Acid by donating a proton in water, and water in turn acts as a Brønsted Base by accepting a proton from HCl.

2) Indicators are organic substances that change colours at certain pH values. In order to determine whether a substance is an acid or base you must use both red and blue litmus paper. This is mainly to determine if the substance is neutral because the paper will stay the same colour in both.

3) There are two types of litmus paper: red litmus paper and blue litmus paper. Blue litmus paper turns red if the substance is acidic. Red litmus paper turns blue if the substance is basic or alkaline. Litmus turns red in acidic solutions and blue in basic solutions.

Explanation: