give a recipe for preparing a CH3CO2H-CH3CO2Na buffer solution that has pH=4.44
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give a recipe for preparing a CH3CO2H-CH3CO2Na buffer solution that has pH=4.44
What is the [CH3CO2-]/[CH3CO2H] ratio necessary to make a buffer solution with a pH of 4.44? The Ka for acetic acid is 1.76 x 10^-5. The answer choices are A) .39:1 B) .49:1 C) 1.07:1 D) 1.33:1 E) 4.44:1 It is NOT A according to my professor counting that wrong on the exam, I just want the answer and how it works please!
22) What is the [CH3CO2-1/[CH3CO2H] ratio necessary to make a buffer solution with a pH of 4.79? Ka = 1.78 x 10-5 for CH3CO2H. A) 0.94:1 B) 2.0:1 C) 1.1:1 D) 0.50:1 23) Which is the best acid to use in the preparation of a buffer with pH = 3.3? A) HNO3 B) HOI (Ka = 2.0 x 10-11) C) HNO2 (Ka = 4.5 x 104) D) HIO3 ((Ka = 1.7 x 10-1) 24) What is the percent dissociation of...
Determine the pH of a 0.161 M CH3CO2H M solution if the Ka of CH3CO2H is 1.8 x 10^-5
A) A buffer containing acetic acid and sodium acetate has a pH of 5.45. The Ka value for CH3CO2H is 1.80 × 10-5. What is the ratio of the concentration of CH3CO2H to CH3CO2-? [CH3CO2H]/[ CH3CO2-] = _________ B) What is the pH change when 29.6 mL of 0.117 M NaOH is added to 95.4 mL of a buffer solution consisting of 0.123 M NH3 and 0.179 M NH4Cl (Ka for ammonium ion is 5.6x10^-10.) pH change =_______
What is the pH of an acetic acid/sodium acetate buffer with [CH3CO2H] = 0.850 M and [CH3CO2-] = 0.550 M? Ka for acetic acid = 1.8×10-5 pH =
Determine Ka for a 0.10M acetic acid (CH3CO2H) solution that has a pH of 2.87.
which weak acid would be best to use when preparing a buffer solution with a pH of 4.76? hypobromous acid chloroacetic acid propanoic acid nitrous acid
Which of the following substances will be best for preparing a buffer solution with a pH=7.4 Acid HCIO 2.9 x 10-8 H2CO3 4.4 x 10-7 HNO2 7.4 x 10-4 NH4 5.8 x 10-10 HCIO HNO2 NH4 O H₂CO₃
a solution is prepared by mixing 2.50 g of acetic acid (CH3CO2H, FW=60g/mol, Ka=1.75x10^(-5) with 4.70 g of sodium acetate (CH3CO2Na, FW=82g/mol) and adding water to a 500 mL volume. Note that sodium acetate yields Na+ and CH3COO-, the conjugate base of acetic acid. a.) what is the pH? b.) 15mL of 0.50 M HCl were added to the 500 mL solution, what is the pH after addituon of acid? write answer to 3 sig. figured.
3.) A buffer containing acetic acid and sodium acetate has a pH of 5.25. The Ka value for CH3CO2H is 1.80 × 10-5. What is the ratio of the concentration of CH3CO2H to CH3CO2-?