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Questions and Answers
What is the pH of an HCl solution if [H+] = 0.03?
What is the pH of an HCl solution if [H+] = 0.03?
What is the concentration of the perchloric acid when 100 mL is neutralized by exactly 46.9 mL of 0.75 M lithium hydroxide?
What is the concentration of the perchloric acid when 100 mL is neutralized by exactly 46.9 mL of 0.75 M lithium hydroxide?
What is the concentration of the KOH if 50 mL of it is neutralized by dripped 0.10 M H2SO4 after 33.4 mL is added?
What is the concentration of the KOH if 50 mL of it is neutralized by dripped 0.10 M H2SO4 after 33.4 mL is added?
How much hydrochloric acid must be added to 50 mL of 0.32 M NH3 to react completely?
How much hydrochloric acid must be added to 50 mL of 0.32 M NH3 to react completely?
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Which type of titration is shown by the titration curve below?
Which type of titration is shown by the titration curve below?
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Study Notes
pH of HCl Solution
- pH Calculation: For hydrochloric acid (HCl), pH is determined using the formula ( \text{pH} = -\log[H^+] ).
- Given Concentration: A concentration of ( [H^+] = 0.03 ) results in a pH of 1.5.
Neutralization Reaction with Perchloric Acid
- Reaction Equation: Perchloric acid (HClO4) reacts with lithium hydroxide (LiOH) to form lithium perchlorate (LiClO4) and water (H2O).
- Volume and Molarity: 100 mL of HClO4 is neutralized by 46.9 mL of 0.75 M LiOH.
- Concentration Calculation: The concentration of the perchloric acid is determined to be 0.35 M.
Sulfuric Acid and Potassium Hydroxide Reaction
- Chemical Equation: Sulfuric acid (H2SO4) reacts with potassium hydroxide (KOH) as follows: ( H2SO4 + 2KOH \rightarrow K2SO4 + 2H2O ).
- Indicator Used: Bromthymol blue indicates the pH change during titration.
- Volume of H2SO4 Added: 33.4 mL of 0.10 M H2SO4 is required to react with the KOH.
- Concentration of KOH: The resulting concentration of KOH is 0.13 M.
Titration of Ammonia with Hydrochloric Acid
- Reaction Overview: Hydrochloric acid (HCl) reacts with ammonia (NH3) to produce ammonium chloride (NH4Cl).
- Titration Details: Titrating 50 mL of 0.32 M NH3 with 0.5 M HCl.
- Volume of HCl Required: A total of 32.0 mL of HCl is needed for complete neutralization of the ammonia.
Titration Curve Analysis
- Titration Type Identified: The titration curve indicates a weak base (NH3) being titrated by a strong acid (HCl).
- Importance of Understanding Titration Curves: Identifying the type of titration helps in predicting the pH changes and endpoint detection during the titration process.
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Description
Test your knowledge on titration concepts with these flashcards, which cover key definitions and calculations involving pH and acid-base reactions. Each card provides a question along with the correct answer for easy review. Perfect for students studying chemistry or preparing for exams.
