Question

four bottles contains solutions A,B,C and D. the pH values of the solutions are 5,6,7 and 8 respectively. comment on the nature of these substances.

Answer 1

A with pH value 5 is less acidic in nature, B with pH value 6 is least  acidic in nature, C with pH value 7 is neutral hence niether it is acidic nor basic. Last,D with pH 8 is least basic is nature.

Answer 2

A and B are acidic, C is neutral and D is basic.

• In the pH paper, the acidic range lies below 7.
• The neutral range lies at pH 7.
• The basic range lies above pH 7 to pH 14 in pH paper.
• Here solution A has pH 5 so, it is acidic.
• Solution B has pH 6 so, it is acidic.
• Solution C has pH 7 so, it is neutral.
• Solution D has pH 8 so, it is basic.
• Hence A and B are acidic, C is neutral and D is basic.