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Questions and Answers
What is the primary standard substance used in the experiment for determining the normality of NaOH?
What is the primary standard substance used in the experiment for determining the normality of NaOH?
- HOOC-COOH (correct)
- H2O
- NaOH
- Na2CO3
Which indicator is used in the titration experiment involving NaOH and HOOC-COOH?
Which indicator is used in the titration experiment involving NaOH and HOOC-COOH?
- Phenolphthalein (correct)
- Bromothymol blue
- Methyl red
- Litmus
What is the reaction between NaOH and HOOC-COOH according to the given theory?
What is the reaction between NaOH and HOOC-COOH according to the given theory?
- $HOOC-COOH.2H2O (aq) + NaOH (aq) ightarrow NaOOC-COONa (aq) + H2O$
- $HOOC-COOH (aq) + NaOH (aq) ightarrow NaOOC-COONa (aq) + H2O$
- $HOOC-COOH.2H2O (aq) + 2NaOH (aq) ightarrow NaOOC-COONa (aq) + 2 H2O$ (correct)
- $2HOOC-COOH (aq) + 2NaOH (aq) ightarrow NaOOC-COONa (aq) + 2 H2O$
What type of acid is HOOC-COOH?
What type of acid is HOOC-COOH?
What equation represents the theory of titration mentioned in the text?
What equation represents the theory of titration mentioned in the text?
What is the purpose of using phenolphthalein in the titration experiment involving NaOH and HOOC-COOH?
What is the purpose of using phenolphthalein in the titration experiment involving NaOH and HOOC-COOH?
Which substance is a primary standard substance in the titration experiment involving NaOH and HOOC-COOH?
Which substance is a primary standard substance in the titration experiment involving NaOH and HOOC-COOH?
What is the role of NaOOC-COONa in the titration experiment involving NaOH and HOOC-COOH?
What is the role of NaOOC-COONa in the titration experiment involving NaOH and HOOC-COOH?
Which statement accurately describes the reaction between HOOC-COOH.2H2O and NaOH?
Which statement accurately describes the reaction between HOOC-COOH.2H2O and NaOH?
Why is HOOC-COOH.2H2O considered a diacidic weak acid in the context of the titration experiment?
Why is HOOC-COOH.2H2O considered a diacidic weak acid in the context of the titration experiment?
What is the purpose of using phenolphthalein in the titration experiment involving NaOH and HOOC-COOH?
What is the purpose of using phenolphthalein in the titration experiment involving NaOH and HOOC-COOH?
Which substance is a primary standard substance in the titration experiment involving NaOH and HOOC-COOH?
Which substance is a primary standard substance in the titration experiment involving NaOH and HOOC-COOH?
What is the role of NaOOC-COONa in the titration experiment involving NaOH and HOOC-COOH?
What is the role of NaOOC-COONa in the titration experiment involving NaOH and HOOC-COOH?
What equation represents the theory of titration mentioned in the text?
What equation represents the theory of titration mentioned in the text?
What is the reaction between NaOH and HOOC-COOH according to the given theory?
What is the reaction between NaOH and HOOC-COOH according to the given theory?
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Study Notes
Titration Experiment
- The primary standard substance used in the experiment to determine the normality of NaOH is potassium hydrogen phthalate (KHP).
Titration Reaction
- The reaction between NaOH and HOOC-COOH (potassium hydrogen phthalate) is a neutralization reaction.
- The reaction involves the hydroxide ions (OH-) from NaOH reacting with the hydrogen ions (H+) from HOOC-COOH.
Indicator and Acid Type
- Phenolphthalein is the indicator used in the titration experiment involving NaOH and HOOC-COOH.
- HOOC-COOH (potassium hydrogen phthalate) is a diacidic weak acid.
Purpose of Phenolphthalein
- The purpose of using phenolphthalein in the titration experiment is to indicate the endpoint of the reaction, as it turns pink in basic conditions.
Primary Standard Substance
- Potassium hydrogen phthalate (KHP) is the primary standard substance in the titration experiment involving NaOH and HOOC-COOH.
Role of NaOOC-COONa
- NaOOC-COONa is the salt formed during the reaction between NaOH and HOOC-COOH.
Titration Equation
- The equation representing the theory of titration mentioned in the text is: HOOC-COOH + NaOH → NaOOC-COONa + H2O
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