Each value below represents a different aqueous solution at 25 °C. Classify each solution as acidic, basic, neutral.

Question

1. pH = 1.77
2. [OH^-] = 4.9 x 10^-5
3. pOH = 5.14
4. [H^+] = 1.0 x 10^-7
5. [H^+0 = 1.9 x 10^-5
6. pOH = 7.00
7. pH = 9.06
8. [H^+] = 5.0 x 10^-10
9. pOH = 13.53
10. [OH^-] = 4.6 x 10^-12

Answer 1

pH + pOH = 14

pH = 7 --> Neutral

pH > 7 --> Basic

pH < 7 --> Acidic

pOH = 7 --> Neutral

pOH > 7--> Acidic

pOH < 7 --> Basic

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[H⁺][OH^-] = 1x10^-14

[H+] = 1x10^-7 --> Neutral

[H+] > 1x10^-7 --> Acidic

[H+] < 1x10^-7 --> Basic

[OH-] = 1x10^-7 --> Neutral

[OH-] > 1x10^-7 ---> Basic

[OH-] < 1x10^-7 --> Acidic

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Some examples from your list. You do the rest:

1. pH = 1.77 = Acidic (pH<7)
2. [OH^-] = 4.9 x 10^-5 = Basic (OH^- > 1x10^-7)
3. pOH = 5.14 = Basic (pOH < 7)
4. [H^+] = 1.0 x 10^-7 = Neutral
5. [H^+] = 1.9 x 10^-5 = Acidic (H⁺ > 1x10^-7)