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Questions and Answers
What is the purpose of this experiment?
What is the purpose of this experiment?
- To determine the exact concentration of a sodium hydroxide solution by titrating it against an acid of accurately known concentration. (correct)
- To prepare a 0.1 mol L- solution of Li oxalic acid.
- To prepare a standard solution of sodium hydroxide directly from the solid.
- To observe the stoichiometric equation for the titration reaction.
What is the stoichiometric equation for the titration reaction in this experiment?
What is the stoichiometric equation for the titration reaction in this experiment?
- (COOH)2 + NaOH -> 2H2O + (COONa)2 (correct)
- (COOH)2 + 2NaOH -> H2O + (COONa)
- (COOH) + NaOH -> H2O + (COONa)
- (COOH)2 + NaOH -> H2O + (COONa)
Why can't a standard solution of sodium hydroxide be prepared directly from the solid?
Why can't a standard solution of sodium hydroxide be prepared directly from the solid?
- Sodium hydroxide is too expensive.
- Sodium hydroxide is too reactive.
- Sodium hydroxide is too toxic.
- Sodium hydroxide is not a primary standard. (correct)
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