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What is the (OH)- ion in the solution prepared by mixing 20 ml of .050M of HCl with 30 ml od .10M Ba(OH)2?

What is the (OH)- ion in the solution prepared by mixing 20 ml of .050M of HCl with 30 ml od .10M Ba(OH)2?

Grade:12th pass

1 Answers

Bhavya
askIITians Faculty 1281 Points
7 years ago
Dear student
HCl + Ba(OH)2 --------> BaCl2 + H2O

20*0.05 30*0.1
millimoles millimoles
=1(Limiting) = 3 (Excess)
Millimoles of Ba(OH)2 > HCl
Remaining amount of Ba(OH)2 = 2 millimoles
Ba(OH)2 -------> Ba + 2OH-
thus millimoles of OH- = 2*2 millimoles

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