Solution #1: a solution mixture containing 10.00ml of 0.1000N HCLand 20.00ml of

Question

Solution #1: a solution mixture containing 10.00ml of 0.1000N HCLand 20.00ml of 0.05000N of NaOH. Solution #2: a solution mixture containing 10.00ml of 0.1000NHCL and 20.00ml of 0.05000N of HNO3. Solution#3: a solution mixture containing 10.00ml of 0.1000Nc6H5NH2 and 20.00ml of 0.05000N of C6H5NH3. Solution#4: a solution mixture contaiing 10.00ml of 0.1000NHNO3 and 20.00ml of 0.05000N of C6H5NH2. Solution #5: a solution mixture containing 10.00ml of 0.1000NNaOH and 20.00ml of 0.05000N C6H5NH2.
(Kb for C6H5NH2 = 4.27 x 10-10)
Which solutions listed above has (Have) a pH less than7.00? Explain.
Which solutions listed above has(Have) a pH greaterthan 7.00? Explain.
Which solutions listed above has a Ph equal to 7.0.explain.
Steps to acquiring answers to the above would be trulyappreciated. Thank you! Solution #2: a solution mixture containing 10.00ml of 0.1000NHCL and 20.00ml of 0.05000N of HNO3. Solution#3: a solution mixture containing 10.00ml of 0.1000Nc6H5NH2 and 20.00ml of 0.05000N of C6H5NH3. Solution#4: a solution mixture contaiing 10.00ml of 0.1000NHNO3 and 20.00ml of 0.05000N of C6H5NH2. Solution #5: a solution mixture containing 10.00ml of 0.1000NNaOH and 20.00ml of 0.05000N C6H5NH2.
(Kb for C6H5NH2 = 4.27 x 10-10)
Which solutions listed above has (Have) a pH less than7.00? Explain.
Which solutions listed above has(Have) a pH greaterthan 7.00? Explain.
Which solutions listed above has a Ph equal to 7.0.explain.
Steps to acquiring answers to the above would be trulyappreciated. Thank you!

Explanation / Answer

      No. of equivalents of NaOH = 0.05 x 20/1000 = 0.001    Since No. of equivalents of HCl = No. of equivalentsof NaOH, therefore, pH = 7        #2 ) No. of equivalents of HCl = 0.1 x 10/1000 =0.001        No. of equivalents of HNO3 = 0.05 x 20/1000 =0.001        Since No. of equivalents of HCl = No. of equivalentsof HNO3 , therefore, pH = 7       #3) No. of equivalents ofC6H5NH2 - 0.1 x 10/1000 =0.001       No. of equivalentsof  C6H5NH3 - 0.05 x20/1000 = 0.001    Though No. of equivalents of both are same, sinceC6H5NH3 is stronger, therefore, pH< 7       #4) No. of equivalents of HNO3 - 0.1 x 10/1000= 0.001       No. of equivalentsof  C6H5NH2 - 0.05 x20/1000 = 0.001    However, since HNO3 is a very strong acid, pH <7       #5) No. of equivalents of NaOH - 0.1 x 10/1000 =0.001       No. of equivalents of CHNH - 0.05 x 20/1000 = 0.001       However, since NaOH is a very strong base, it dominates, thuspH > 7

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