Calculate the concentrations of all species found in 0.30 M Na2HPO4 solution as well as the pH of...
Calculate the concentrations of all species found in 0.30 M Na2HPO4 solution as well as the pH of this solution: [ For H3PO4 Ka1=7.11x10^-3, Ka2=6.34x10^-8, and Ka3=4.33x10^-13]. a. [Na+] b. [H3PO4] c. [H2PO4] d. [HPO4] e. [PO4] f. [H+] g.[OH-] h. pH=?
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Calculate the concentrations of all species found in 0.30 M Na2HPO4 solution as well as the pH of...
Calculate the concentrations of all species in a 1.64 M Na2SO3 (sodium sulfite) solution. The ionization...
Calculate the concentrations of all species in a 1.64 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1=1.4×10−2 and Ka2=6.3×10−8. [Na+]= [HSO-3]= [OH−]= [SO232-]= [H2SO3]= [H+]=
Calculate the concentrations of all species in a 0.340 M Na2SO3 (sodium sulfite) solution. The ionization...
Calculate the concentrations of all species in a 0.340 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10–2 and Ka2 = 6.3× 10–8. (NA+) (SO3^2-) HSO3^-1 H2SO3 OH^-1 H^+
A buffer consists of 0.24 M NaH2PO4 and 0.47 M Na2HPO4. Given that the K values...
A buffer consists of 0.24 M NaH2PO4 and 0.47 M Na2HPO4. Given that the K values for H3PO4 are, Ka1 = 7.2 x 10-3, Ka2 = 6.3 x 10-8, and Ka3 = 4.2 x 10-13, calculate the pH for this buffer.
A buffer consists of 0.24 M NaH2PO4 and 0.47 M Na2HPO4. Given that the K values...
A buffer consists of 0.24 M NaH2PO4 and 0.47 M Na2HPO4. Given that the K values for H3PO4 are, Ka1 = 7.2 x 10-3, Ka2 = 6.3 x 10-8, and Ka3 = 4.2 x 10-13, calculate the pH for this buffer. I know that the answer is 7.49 because pH = -log(6.3 x 10-8) + log(0.47/0.24). What I want to know is WHY 6.3 x 10-8 was used instead of Ka1 or Ka3. Thanks.
A buffer consists of 0.34 M NaH2PO4 and 0.28 M Na2HPO4. Given that the values for...
A buffer consists of 0.34 M NaH2PO4 and 0.28 M Na2HPO4. Given that the values for H3PO4 are, Ka1 -7.2 x 10-3 Ka2 = 6.3 x 10-8 and Ka3 = 4.2x 10-13, calculate the pH for this buffer. Selected Answer: Correct Answer: [None Given] 7.12 10.02
Calculate the pH and the equilibrium concentrations of H2AsO4-, HAsO42- and AsO43- in a 0.2620 M ...
Calculate the pH and the equilibrium concentrations of H2AsO4-, HAsO42- and AsO43- in a 0.2620 M aqueous arsenic acid solution. For H3AsO4, Ka1 = 2.5×10-4, Ka2 = 5.6×10-8, and Ka3 = 3.0×10-13 pH = [H2AsO4-] = M [HAsO42-] = M [AsO43-] = M
Calculate the pH and the equilibrium concentrations of H2AsO4-, HAsO42- and AsO43- in a 0.2380 M...
Calculate the pH and the equilibrium concentrations of H2AsO4-, HAsO42- and AsO43- in a 0.2380 M aqueous arsenic acid solution. For H3AsO4, Ka1 = 2.5×10-4, Ka2 = 5.6×10-8, and Ka3 = 3.0×10-13 pH = [H2AsO4-] = M [HAsO42-] = M [AsO43-] = M
Calculate the concentrations of all species in a 0.610 M Na2SO3 (sodium sulfite) solution. The ionization...
Calculate the concentrations of all species in a 0.610 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10–2 and Ka2 = 6.3× 10–8. A. [HSO3-] B. [H2SO3] C. [OH-] D. [H+]
Part 3 – Put it all together. Calculate the concentrations of all species in a 0.330...
Part 3 – Put it all together. Calculate the concentrations of all species in a 0.330 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10–2 and Ka2 = 6.3× 10–8. Na+ H+ OH- H2SO3 SO3 2- HSO3 -
Calculate the ratio of the molar concentrations of HPO42- and H2PO4- ions required to obtain a...
Calculate the ratio of the molar concentrations of HPO42- and H2PO4- ions required to obtain a buffer solution at pH = 7.0. For phosphoric acid, Ka1 = 7.5 × 10-3 Ka2 = 6.2 × 10-8 Ka3 = 4.2 × 10-13
A buffer consists of 0.34 M NaH2PO4 and 0.28 M Na2HPO4. Given that the values for H3PO4 are, Ka1 -7.2 x 10-3 Ka2 = 6.3 x 10-8 and Ka3 = 4.2x 10-13, calculate the pH for this buffer. Selected Answer: Correct Answer: [None Given] 7.12 10.02
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