When does a chemical indicator change?

Question

When does a chemical indicator change?

in progress 0
Thạch Thảo 5 years 2021-08-18T05:56:36+00:00 1 Answers 15 views 0

Answers ( )

  1. kiet
    0
    2021-08-18T05:58:21+00:00
    Reply

    Chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )