Question

When a drop of an unknown sample X is placed on a strip of pH paper, a deep red colour is
produced. Which one of the following is X?
(a) NaOH
(b) HCI
(c) Water
(d) CH,COOH​

Answer 1

Answer:

hcl because in acid the blue litmus paper turns red

Explanation:

thank you

Answer 2

Answer:

HCL because it's an acid