Calculate the pH of a 1.2x10-3 mol/L solution of Sr(OH)2. Express your answer to two decimal places. pH =

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Calculate the pH of a 1.2x10-3 mol/L solution of Sr(OH)2.
Express your answer to two decimal places.
pH
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Transcribed Image Text:26 Calculate the pH of a 1.2x10-3 mol/L solution of Sr(OH)2. Express your answer to two decimal places. pH %D ut of s page Next page pur Pledge, Midterm Periodic Table - printable Jump to... 3 pdf
Expert Solution
Step 1

Sr(OH)2 is act as a strong base and hence it dissociate completely in solution.

The dissociation of Sr(OH)2 is,

Sr(OH)2   Sr2+ + 2OH-

Step 2

The concentration of Sr(OH)2 is 1.2 × 10-3 mol/L.

From the above equation, 1 mol of Sr(OH)2 gives 2 moles of hydroxide ion. So, the concentration of hydroxide ions would also be two times to the given concentration of Sr(OH)2. 

So the concentration of OH- ion is 2.4×10-3 mol/L

 

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