Question

In: Chemistry

1.) In one or two sentences, describe how to use and interpret the result from each...

1.) In one or two sentences, describe how to use and interpret the result from each of the following to measure pH.

a.) acid-base indicator solutions.

b.) universal indicator paper.

c.) pH meter.

d.) if a solution had [h+] = 4.9 * 10-7, what is the pH?

Solutions

Expert Solution

a.) acid-base indicator solutions.

acid-base indicator are substance which change colour in PH

A substance which change in one colour in acid solution and another colour in basic solution is celled indicator.

b.universal indicator paper.

A universal indicator is a substance that changes colour based on the PH level of the solution. It is used to determine the acidic and basic level of a substance. Universal indicators are made up of a mixture of substances.

C. PH meter

PH 1----------------------------------------------7 ---------------------------------------------------14

               acidic solution                            neutral solution     basic solution

d. [H+]   = 4.9*10^-7M

   PH = -log[H^+]

        = -log4.9*10^-7

        = 6.3098 >>>>>answer

queen_honey_blossom answered 2 years ago
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