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In: Chemistry

How many moles of OH- ions are present in 422mL of a 1.21 molar solution of...

How many moles of OH- ions are present in 422mL of a 1.21 molar solution of Ba(OH)2?

Solutions

Expert Solution

   no of moles of Ba(OH)2   = molarity * volume in L

                                           = 1.21*0.422

                                           = 0.51 moles

Ba(OH)2 ------------------> Ba^2+ (aq) + 2OH^-

0.51 moles                                              2*0.51moles

no of moles of OH^-   = 2*0.51   = 1.02 moles


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