Consider a solution containing 0.100 M fluoride ions and 0.126 Mhydrogen fluorid

Question

Consider a solution containing 0.100 M fluoride ions and 0.126 Mhydrogen fluoride. The
concentration of fluoride ions after the addition of 5.00 mL of0.0100 M HCl to 25.0 mL of this
solution is ____?

I've tried working this problem with ICE tables but can't seem toget the setup correctly, an explanation of the problem's solutionwould be more helpful than the answer, thanks.

Explanation / Answer

                                                                   F- (aq)   +   H+(aq)    ------------------>      HF (aq) Before rxn(moles)                    0.025 L * 0.100M                                                  0.025 L * 0.126 M                                                            = 0.0025moles                                                 = 0.00315 moles                                                                                    0.005 L * 0.01 M                                                                 = 0.00005 moles After rxn(moles)                          0.0025 -0.00005              0                                    0.00315 + 0.00005                                                            =0.00245                                                                   = 0.0032 Now the concentration of fluoride ion after addingacid = 0.00245 moles / 0.025 L + 0.005 L                                                                                          = 0.0816 M

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