Witryna2. Prepare the 0.3 M NaOH solution. 3. Titrate about 20 mL of 0.3 M NaOH solution with Potassium hydrogen phthalate using phenolphthalein as an indicator. Repeat at least 3 times. 4. Prepare the NaCl solution with the same concentration as the titrated NaOH solution. 5. Measure the absorbance of each series as a function of time at =550 nm. WitrynaThí nghiệm 2: Cho vào ống nghiệm khoảng 1 mL dung dịch NaOH loãng, sau đó nhỏ vào ống nghiệm 2 – 3 giọt dung dịch phenolphthalein. Dùng ống hút nhỏ giọt nhỏ từ từ dung dịch HCl vào hỗn hợp, vừa nhỏ vừa lắc (Hình 9.1).

Phenolphthalein Chemistry Lab Report - 1233 Words Cram

WitrynaA titration is carried out for 25.00 mL of 0.100 M HCl (strong acid) with 0.100 M of a strong base NaOH (the titration curve is shown in Figure 14.18). Calculate the pH at these volumes of added base solution: (a) 0.00 mL (b) 12.50 mL (c) 25.00 mL (d) 37.50 mL. ... Phenolphthalein, on the other hand, exhibits a color change interval that … Witryna3 lip 2024 · (A) In general phenolphthalein is used as an indicator for the titration of weak acid (CH3 COOH) and strong base (NaOH). What is the most suitable indicator for titration? The indicator phenolphthalein, whose range spans from pH 8 to 10, therefore makes a good choice for this type of titration. rules on towing a trailer

What color does NaOH and phenolphthalein? – MassInitiative

Witryna16 lut 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 … Witryna20.00 mL of a H 2 SO 4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 26.09 mL of a 0.1333 M NaOH solution. What is the concentration of the H 2 SO 4 solution? [H 2 SO 4 ] = WitrynaIn this video, I have demonstrated the whole experiment related to NaOH vs HCl titration. Also included precautions, practical copy record and important points regarding the … rules on texas holdem poker