What is the component concentration ratio, [Pr−]/[HPr], of a buffer that has a pH of 4.57? (Ka of HPr = 1.3 × 10−5) Report your answer to 3 significant figures.
What is the component concentration ratio, [Pr−]/[HPr], of a buffer that has a pH of 4.57? (Ka of HPr = 1.3 × 10−5) Repo...
What is the component concentration ratio, [Pr−]/[HPr], of a buffer that has a pH of 4.53? (Ka of HPr = 1.3 × 10−5)
What is the component concentration ratio, [BrO−]/[HBrO], of a buffer that has a pH of 8.07? (Ka of HBrO = 2.3 × 10−9)
QUESTION 6 What is the buffer component ratio, (CH3CH2COO(CH3CH2COOH) of a propanoate buffer that has a pH of 4.77. Ka of CH3CH2COOH is 1.3 x 10-5. Enter your answer with three decimal places and no units.
What is the buffer component ratio, (NO2-)/(HNO2) of a nitrite buffer that has a pH of 2.96. Ka of HNO2 is 7.1 x 10-4.
Calculate the pH of a dihydrogen phosphate/hydrogen phosphate buffer prepared with the following concentration. (Ka for H2PO4− is 6.2 × 10−8). Report your answer to three significant figures. 2.0 M NaH2PO4 and 2.0 M Na2HPO4:
Calculate the mole ratio of NaF to HF required to create a buffer with pH=4.10. Ka(HF)=6.3×10−4 Express your answer using two significant figures. [NaF][HF] = ??
4.87 4.92 4.71 4.99 4.57 A student prepares a buffer by adding 200.0 mL of 2.0 M NaOH to 500.0 mL of 2.0 MCH3CH2COOH. What is the pH of this buffer? Ka = 1.3 × 10–5
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-?
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 =_______
A buffer is made using 48.0 mL of 0.770 M HC3H5O2 (Ka = 1.3 ✕ 10−5) and 48.0 mL of 0.690 M NaC3H5O2. What volume of 0.17 M NaOH must be added to change the pH of the original buffer solution by 1.6%? (Do not round intermediate steps.)