Bantuin dong plisss…kumohon ​

Jawaban:

1. pH: 1

2. pH: 1- log 2

3. pH: 6 – log 8.7

4. pH: 13

5. pH: 10 + log 2,4

Penjelasan:

1. [H+] = Ma x a

= 0.1 x 1 = 0.1/10^-1

pH = -log [H+]

= -log 10^-1 = 1

2. [H+] = Ma x a

= 0.1 x 2 = 0.2/2 x 10^-1

pH = -log [H+]

= -log 2 x 10^-1

= 1-log 2

3. [H+] = √Ma x Ka

= √0.15 x 5×10^-10

= √75 x 10^-12

= 8.7 x 10^-6

pH = -log [H+] = -log 8.7 x 10^-6

pH = 6-log 8.7

4. [OH-] = Mb x b

= 0.1 x 1 = 0.1/ 10^-1

pOH = -log [OH-]

= -log 10^-1

= 1

pH = 14-pOH = 14-1 =13

5. [OH-] = √Mb x Kb

= √2×10^-3 x 3×10^-5

= √6 x 10^-8

= 2.4 x 10^-4

pOH = -log [OH-] = -log 2.4 x 10^-4

= 4-log 2.4

pH = 14-pOH = 14-(4-log 2.4)

= 10 + log 2.4