Calculate the approximate pH of an aqueous solution of H2S , 0.05 M, and H3PO4, 0.21 M at 25°C. (...
Calculate the approximate pH of an aqueous solution of H2S , 0.05 M, and H3PO4, 0.21 M at 25°C. (Note: consider one decimal place for the pH answer.)
pKa H2S/HS- = 7.02, pKa HS-/S2- = 13.99
pKaH3PO4/ H2PO4- =2.15, pKaH2PO4-/HPO42-=7.15, pKa HPO42-/ PO43- =12.38
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Calculate the approximate pH of an aqueous solution of H2S , 0.05 M, and H3PO4, 0.21 M at 25°C. (...
Calculate the approximate pH of an aqueous solution of a mixture of CH3COOH, 0.27 M, and...
Calculate the approximate pH of an aqueous solution of a mixture of CH3COOH, 0.27 M, and CH3COONa, 0.15 M, at 25°C. (Note: consider one decimal place for the pH answer.) pKa = 4.76.
Calculate the approximate pH of an aqueous solution of sodium carbonate Na2CO3 , 0.28 M, at...
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Calculate the approximate pH of an aqueous solution of ammonium chloride, NH4Cl , 0.03 M, and...
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the pH and [s2-1 in a 0.21 M H2S solution. Assume Ka,-1.0x10-7. Ka,-1.0x10-19. Calculate pH [s2-] Calculate the pH of a...
the pH and [s2-1 in a 0.21 M H2S solution. Assume Ka,-1.0x10-7. Ka,-1.0x10-19. Calculate pH [s2-] Calculate the pH of a 3.9x10 M solution of H2SO4 Need Help? Read it
the pH and [s2-1 in a 0.21 M H2S solution. Assume Ka,-1.0x10-7. Ka,-1.0x10-19. Calculate pH [s2-] Calculate the pH of a 3.9x10 M solution of H2SO4 Need Help? Read it
3) Calculate the pH of a solution by mixing 50.0 mL of 0.200 M Na2HPO4 with...
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An aqueous solution of 0.100 M phosphoric acid (12.0 mL) is titrated with 0.400 M KOH...
An aqueous solution of 0.100 M phosphoric acid (12.0 mL) is
titrated with 0.400 M KOH as shown below. phosphoric acid has three
pKas: 2.148, 7.198, 12.375.
H3PO4(aq) + OH-(aq)
H2PO4-(aq) +
H2O(l)
H2PO4-(aq) + OH-(aq)
HPO42-(aq) +
H2O(l)
HPO42-(aq) + OH-(aq)
PO43-(aq) + H2O(l)
Calculate the pH of phosphoric acid solution before any KOH has
been added.
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5. Calculate the pH at 25°C of a 0.85 M aqueous solution of phosphoric acid (H3PO4)....
5. Calculate the pH at 25°C of a 0.85 M aqueous solution of phosphoric acid (H3PO4). 5. (Ka1, Ka2, and Ka3 for phosphoric acid are 7.5 × 10−3, 6.25 × 10−8, and 4.8 × 10−13, respectively.)
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa =...
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa = 4.75) B) HF (PK:= 3.45) C) H3PO4 (pKal = 2.12) D) HCIQ (Ka=2.00) E) Since all are acids, the pH is the same for all solutions. 5. Which one of the following salts gives an acidic aqueous solution? A) CsNO3 B) CaCl2C ) LiF D) Cr(CIO4)3 E) NaCH3CO2 6. 7. All of the following are strong acids except A) HCIQB) HC104 C) HI D)...
7. Choose the best answer for an aqueous solution labeled "0.10 M sodium hydroxide," A) the...
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Calculate the pH of a 0.982 M solution of hydrogen sulfide (H2S) Where: H2S (aq) ->...
Calculate the pH of a 0.982 M solution of hydrogen sulfide (H2S) Where: H2S (aq) -> H+ (aq) + HS- (aq) Ka1 = 1.0 x 10-7 HS- (aq) -> H+ (aq) + S2- (aq) Ka2 = 1.0 x 10-19 Enter your answer with at least 2 sig figs.
the pH and [s2-1 in a 0.21 M H2S solution. Assume Ka,-1.0x10-7. Ka,-1.0x10-19. Calculate pH [s2-] Calculate the pH of a 3.9x10 M solution of H2SO4 Need Help? Read it
the pH and [s2-1 in a 0.21 M H2S solution. Assume Ka,-1.0x10-7. Ka,-1.0x10-19. Calculate pH [s2-] Calculate the pH of a 3.9x10 M solution of H2SO4 Need Help? Read it
3) Calculate the pH of a solution by mixing 50.0 mL of 0.200 M Na2HPO4 with 20.0 mL 0.0400 M NaH2PO4. (Hint: Buffer solution. Use Henderson-Hasselbalch equation) H3PO4 5 H+ + H2PO4 pkı = 2.1 H2PO4 5 H+ + HPO42- pK2 = 7.2 HPO42- 5 H+ PO43- pK3 = 12.3
An aqueous solution of 0.100 M phosphoric acid (12.0 mL) is
titrated with 0.400 M KOH as shown below. phosphoric acid has three
pKas: 2.148, 7.198, 12.375.
H3PO4(aq) + OH-(aq)
H2PO4-(aq) +
H2O(l)
H2PO4-(aq) + OH-(aq)
HPO42-(aq) +
H2O(l)
HPO42-(aq) + OH-(aq)
PO43-(aq) + H2O(l)
Calculate the pH of phosphoric acid solution before any KOH has
been added.
We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this image
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa = 4.75) B) HF (PK:= 3.45) C) H3PO4 (pKal = 2.12) D) HCIQ (Ka=2.00) E) Since all are acids, the pH is the same for all solutions. 5. Which one of the following salts gives an acidic aqueous solution? A) CsNO3 B) CaCl2C ) LiF D) Cr(CIO4)3 E) NaCH3CO2 6. 7. All of the following are strong acids except A) HCIQB) HC104 C) HI D)...
7. Choose the best answer for an aqueous solution labeled "0.10 M sodium hydroxide," A) the pH is greater than 7 B) the pH is less than 7 C) the pH = 1 D) the pH = 7 E) the pH = 13 8. Which one of the following salts gives an acidic aqueous solution? A) LINO3 B) CsBr C) Col2 D) Mg(SO3)2 E) NaF 9. Which one of the following salts gives a basic aqueous solution? A) Fe(NO3)3 B)...
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