WebTiến hành: – Dùng pipette lấy 10 mL dung dịch HCl 0,1 M cho vào bình tam giác, thêm 1 – 2 giọt phenolphthalein. – Cho dung dịch NaOH vào burette, điều chỉnh dung dịch trong burette về mức 0. – Mở khoá burette, nhỏ từng giọt dung dịch NaOH xuống bình tam giác (lắc đều trong quá trình ... WebFeb 16, 2024 · Phenolphthalein is a weak acid and is colorless in solution although its ion is pink. If hydrogen ions (H +, as found in an acid) were added to the pink solution, the equilibrium would switch, and the solution …
Experiment 2 - soluble salt from an alkali - BBC Bitesize
WebPhenolphthalein is another commonly used indicator for titrations, and is another weak acid. ... Sodium carbonate solution and dilute hydrochloric acid. This is an interesting special case. If you use phenolphthalein or … WebApr 11, 2024 · Hydrochloric acid (HCl), sodium hydroxide (NaOH), phenolphthalein, acetic acid (CH 3 COOH), methyl red, and ammonium hydroxide (NH 4 OH) were purchased … eim nominating committee
Solved In the titration of HCl with NaOH, the equivalence - Chegg
WebIn your reaction, your unknown solution was a mixture of Na2CO3 and NaOH. You titrated with HCl. Phenolphthalein and methyl orange were your indicators. When you added the HCl (in the burette that ... http://www.titrations.info/acid-base-titration-hydrochloric-acid WebBecause the NaOH and HCl will be used to analyze other materials in future weeks, it is very important to determine their concentrations as carefully ... hydrochloric acid (12 M) phenolphthalein solution (0.1% in ethanol) potassium hydrogen phthalate solid (reagent-grade) 50% sodium hydroxide solution (commercial) Procedure eimmigration youtube