Chemistry
Chemistry, 20.07.2019 07:40, AJSkullcrusher

The titration of 25 ml of 2.0 m naoh reaches the equivalence or end point when 20 ml of an unknown concentration of hcl has been added. what is the molar concentration of the unknown hcl?

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Chemistry, 03.07.2019 17:00, Alex9089435028
Abeaker contains a 25 ml solution of an unknown monoprotic acid that reacts in a 1: 1 stoichiometric ratio with naoh. titrate the solution with naoh to determine the concentration of the acid. perform a titration by setting the concentration of the naoh solution and adding it to the acid solution using the different add base buttons. the equivalence point of the titration is passed when the solution color changes. the unknown sample can be titrated multiple times by pressing the retitrate button and starting over. enter the concentration of the unknown acid solution.
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Chemistry, 16.07.2019 01:40, Janderson6422
At the equivalence point of a khp/naoh titration, you have added enough oh- to react with all of the hp- such that the only species left in solution are p2- (the conjugate base of hp-) and the spectator ions na+ and k+. if a titration of khp with naoh resulted in [p2-] = 0.042 m at the equivalence point, what is the ph of the solution? ka for hp- = 3.9 x 10-6 3.40 4.98 7.00 9.02 10.61 flag this question
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Chemistry, 29.07.2019 18:20, 163565
At the equivalence point of a khp/naoh titration, you have added enough oh- to react with all of the hp- such that the only species left in solution are p2- (the conjugate base of hp-) and the spectator ions na+ and k+. if a titration of khp with naoh resulted in [p2-] = 0.042 m at the equivalence point, what is the ph of the solution? ka for hp- = 3.9 x 10^-6. a. 3.40 b. 4.98 c. 7.00 d. 9.02 e. 10.61
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Chemistry, 02.10.2019 02:00, Trevon0906
An analytical chemist weighs out 0.188 g of an unknown triprotic acid into a 250 ml volumetric flask and dilutes to the mark with distilled water. he then titrates this solution with 0.0600 m naoh solutions. when the titration reaches the equivalence point, the chemist finds he has added 95.9 ml of naoh solution. calculate the molar mass of the unknown acid.
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