Question

7 You are given 3 unknown solutions with pH value as 6,8 & 9.5 respectively. Which solution will contain maximum OH⁻ ion?*

1 point

(a). Solution sample-1

(b). Solution sample-2

(c). Solution sample-3

(d). Data are insufficient

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Answer 1

Given:

3 unknown solutions with pH value as 6, 8 & 9.5 respectively.

To find:

Which solution has max OH- ?

Calculation:

1st solution:

$\sf{p(OH) = 14 - p(H)}$

$= > \sf{p(OH) = 14 - 6 }$

$= > \sf{p(OH) = 8}$

$= > \sf{{OH}^{ - } = {10}^{ - 8} \: M}$

2nd solution:

$\sf{p(OH) = 14 - p(H)}$

$= > \sf{p(OH) = 14 - 8 }$

$= > \sf{p(OH) = 6 }$

$= > \sf{{OH}^{ - } = {10}^{ - 6} \: M}$

3rd solution:

$\sf{p(OH) = 14 - p(H)}$

$= > \sf{p(OH) = 14 - 9.5 }$

$= > \sf{p(OH) = 4.5 }$

$= > \sf{{OH}^{ - } = {10}^{ - 4.5} \: M}$

So, 3rd solution has highest OH- ions.

Hope It Helps.

Answer 2

Answer:

3rd solution will contain maximum OH⁻ ion