19. An unknown triprotic acid requires 27.62 mL of 0.112 M Ba(OH)₂ to completely neutralize a 0.610-g sample. Calculate the approximate molar mass of the acid. A) 296 g/mol 485 g/mol B) 131 g/mol 394 g/mol C) 323 g/mol D) E) 20. Which species is the oxidizing agent in the following reaction? 2XO + 3Na₂ZO + H₂O 2XO₂ + 2OH- + 3Na₂ZO₁ A) H₂O D) Na₂ZO, B) XO, E) XO₂ C) OH-

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Chapter15: Acid-base Equilibria
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19. An unknown triprotic acid requires 27.62 mL of 0.112 M Ba(OH)₂ to completely neutralize a 0.610-g
sample. Calculate the approximate molar mass of the acid.
A) 296 g/mol
485 g/mol
B) 131 g/mol
394 g/mol
C) 323 g/mol
D)
E)
20. Which species is the oxidizing agent in the following reaction?
2XO + 3Na₂ZO + H₂O
2XO₂ + 2OH- + 3Na₂ZO₁
A) H₂O
D) Na₂ZO,
B) XO,
E) XO₂
C) OH-
Transcribed Image Text:19. An unknown triprotic acid requires 27.62 mL of 0.112 M Ba(OH)₂ to completely neutralize a 0.610-g sample. Calculate the approximate molar mass of the acid. A) 296 g/mol 485 g/mol B) 131 g/mol 394 g/mol C) 323 g/mol D) E) 20. Which species is the oxidizing agent in the following reaction? 2XO + 3Na₂ZO + H₂O 2XO₂ + 2OH- + 3Na₂ZO₁ A) H₂O D) Na₂ZO, B) XO, E) XO₂ C) OH-
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