(a) (b) Based on Table 2, choose and explain your choice of the most suitable indicator used in the titration of the fol

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A B Based On Table 2 Choose And Explain Your Choice Of The Most Suitable Indicator Used In The Titration Of The Fol 1 (99.46 KiB) Viewed 31 times

(a) (b) Based on Table 2, choose and explain your choice of the most suitable indicator used in the titration of the following acid-base reactions. Explain why. i. HCl with NaOH ii. NH4OH with HNO3 (d) Table 2: Indicator and its suitable pH range Transition pH range 3.8-5.4 6.0 -7.6 8.0-9.6 Indicator name Bromocresol green Bromothymol blue Phenolphtalein Calculate the pH of 50 mL HC1 0.20 M solution and its new pH after that solution was diluted 4 times. (4 marks) (3 marks) (c) A 50 mL acetic acid 0.1000 M was titrated against NaOH 0.1000 M. Calculate the pH of the titration mixture after the addition of 20 mL NaOH. (Ka CH3COOH = 1.76 x 10¹5) (5 marks) Discuss why the pH range of 7-10 is more suitable for the determination of chloride ion by using Mohr method. (4 marks)