ALUATION (1O MINS) calculate the ratio of [CH3COOH/NACH3COO] to give a buffer solution at pH 5. Answer: 1.82 What is the pH of the solution of 35 mL 0.20 M formic acid and 55mL 0.10 M sodium formate in 110 mL water? pKa formic acid3D3.75 Answer:3.65 How many gram of ammonia should be added to 500mL of 1M ammonium chloride to give a pH 9? Ka ammonium%3D5.6x10-10 4.76 g ammonia Answer: 0.28 moles ammonia x 17g/mol ammonia =
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answer the following since this is my last question for this account and no funds but needed to get score in chemistry.
![preparing buffer solution.
Calculate the ratio of [CH3COOH]/NACH3COO] to give a buffer solution at pH 5.
ALUATION (10 MINS)
ALUATION (1O MINS)
Answer: 1.82
What is the pH of the solution of 35 ml. 0 20 M formic acid and 55mL 0.10 M sodium formate in 110 mL
water? pKa formic acid=3.75
Answer:3.65
How many gram of ammonia should be added to 500mL of 1M ammonium chloride to give a pH 9? Ka
ammonium%3D5.6x10-10
Answer: 0.28 moles ammonia x 17g/mol ammonia = 4.76 g ammonia
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