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Oran Armstrong

Feb 20, 2025

Problem PageQuestion A chemistry graduate student is given of a benzoic acid solution. Benzoic acid is a weak acid with . What mass

Problem PageQuestion A chemistry graduate student is given of a benzoic acid solution. Benzoic acid is a weak acid with . What mass of should the student dissolve in the solution to turn it into a buffer with pH ? You may assume that the volume of the solution doesn't change when the is dissolved in it. Be sure your answer has a unit symbol, and round it to significant digits.
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Maximus VonRueden

Feb 20, 2025

Complete Question A chemistry graduate student is given 125.mL of a 1.00M benzoic acid HC6H5CO2 solution. Benzoic acid is a weak acid with . What mass of KC6H5CO2 should the student dissolve in the HC6H5CO2 solution to turn it into a buffer with pH =4.63? You may assume that the volume of the solution doesn't change when the KC6H5CO2 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.The mass would be  Explanation:    From the question we are told that            concentration of benzoic acid is             The volume of benzoic acid is             The value of the experimental parameter is           The value of PH is Generally the number of moles is mathematically represented as              No of moles = concentration * volume                               Substituting values                            Generally PH is mathematically represented as                Where is the No of moles of and is the number of moles of benzoic acid                                                                                                                                       Generally the number of moles is mathematically represented as               For                        Molar mass of = 160g/mole                                ... Show More
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