Flashcards in this deck (47)

• What is the compound studied in Milk of Magnesia?

  Mg(OH)2
  chemistry antacid
• What is the minimum percentage of Mg(OH)2 in Milk of Magnesia according to standards?

  7%
  pharmaceutical standards
• What property of Mg(OH)2 makes analysis of Milk of Magnesia challenging?

  It's slightly soluble and forms a cloudy suspension.
  chemistry analysis
• What approach is recommended for analyzing Mg(OH)2 in Milk of Magnesia?

  Back titration
  chemistry titration
• What is added in excess during the back titration of Mg(OH)2?

  HCl
  chemistry acid
• What is used to titrate the excess acid after the reaction?

  NaOH
  chemistry base
• What does Mg(OH)2 do in the stomach?

  Neutralizes excess H+ ions
  biology antacid
• What is the result of adding HCl to Mg(OH)2?

  Formation of a clear solution.
  chemistry reaction
• What is the chemical reaction of HCl and Mg(OH)2?

  2HCl + Mg(OH)2 → MgCl2 + 2H2O (leftover HCl)
  chemistry reactions
• What is produced when HCl reacts with NaOH?

  HCl + NaOH → NaCl + H2O
  chemistry reactions
• What is the byproduct in the reaction of HCl and Mg(OH)2?

  Excess HCl
  chemistry reactions
• What type of reaction occurs between HCl and NaOH?

  Neutralization reaction
  chemistry reactions
• What solution will be standardized with potassium hydrogen phthalate (KHP)?

  NaOH
  chemistry solutions
• What is the abbreviation for potassium hydrogen phthalate?

  KHP
  chemistry abbreviations
• What solution will be standardized using NaOH?

  HCl
  chemistry solutions
• What is determined using standardized NaOH and HCl solutions?

  Amount of Mg(OH)2 in Milk of Magnesia
  chemistry analysis
• What is the goal of Experiment 6 in CHEM1100?

  To understand reaction rates and factors affecting them.
  chemistry experiments
• What factors are studied in this experiment?

  • Concentration
  • Temperature
  • Catalysts
  chemistry reaction_rates
• What is a reaction rate?

  The speed at which reactants convert to products.
  chemistry basics
• What role do catalysts play in reactions?

  They increase the reaction rate without being consumed.
  chemistry catalysis
• How does temperature affect reaction rates?

  Higher temperatures typically increase reaction rates.
  chemistry temperature
• What is the effect of concentration on reaction rates?

  Increasing concentration generally increases the rate of reaction.
  chemistry concentration
• What safety measures should be taken during Experiment 6?

  • Wear safety goggles
  • Use gloves
  • Follow proper waste disposal
  safety chemistry
• What is standardization in chemistry?

  A method to accurately determine the concentration of a solution.
  chemistry standardization
• What is a common method for standardization of acids and bases?

  Acid-base titration.
  chemistry titration
• What is the role of the titrant in titration?

  A primary standard solution of known concentration used to react with the analyte.
  chemistry titration
• What defines a good primary standard?

  • Extremely pure
  • Stable
  • No water of hydration
  • Preferably high molecular weight
  chemistry standards
• Which solution will you prepare as a primary standard in the titration?

  Potassium hydrogen phthalate (KHP).
  chemistry khp
• What is the equivalence point in a titration?

  Where the moles of acid and base in solution are equal.
  chemistry titration
• What is the primary standard used to standardize sodium hydroxide?

  Potassium hydrogen phthalate (KHP).
  chemistry naoh
• What is KHP?

  Potassium sodium phthalate
  chemistry khp
• What is the chemical formula for Potassium sodium phthalate?

  KNaC8H4O4
  chemistry formulas
• What is the purpose of KHP in titrations?

  Standardization of NaOH solutions
  chemistry titration
• What does KHP act as in acid-base reactions?

  A primary standard
  chemistry standards
• What is the molar mass of KHP?

  204.22 g/mol
  chemistry molarity
• What is added to identify the equivalence point in a reaction?

  An indicator
  chemistry indicators
• What color does phenolphthalein change to when there is excess base?

  Pink
  chemistry phenolphthalein
• What color is phenolphthalein in the presence of acid?

  Colourless
  chemistry phenolphthalein
• What are the colors of the solutions used in the reaction between KHP and NaOH?

  Colourless
  chemistry solutions
• What does the indicator help in identifying during a titration?

  The equivalence point
  chemistry titration
• What solution is standardized with NaOH?

  Hydrochloric acid (HCl)
  chemistry acids
• Which indicator is used in the standardization process?

  Phenolphthalein
  chemistry indicators
• What is the balanced equation for the reaction of HCl with NaOH?

  HCl + NaOH → NaCl + H2O
  chemistry reactions
• What standardized solutions are used in the quality control experiment?

  • NaOH
  • HCl
  chemistry quality_control
• What is the purpose of the quality control experiment?

  To determine the amount of Mg(OH)2 in Milk of Magnesia.
  chemistry quality_control
• What product is tested in the quality control experiment?

  Milk of Magnesia
  chemistry products
• What is checked in the quality control experiment?

  To confirm it meets the manufacturer's specifications.
  chemistry quality_control