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Questions and Answers
What is the purpose of understanding pH changes in titrations?
What is the purpose of understanding pH changes in titrations?
- To calculate the hydrolysis constant
- To determine the strong acid vs strong base
- To determine the degree of hydrolysis
- To select a suitable indicator (correct)
What is the pH range for which phenolphthalein is a suitable indicator?
What is the pH range for which phenolphthalein is a suitable indicator?
- 3.2 to 4.5
- 4.4 to 6.5
- 8.3 to 10.5 (correct)
- 6.5 to 8.3
Why are different indicators used for different systems in acid-base titrations?
Why are different indicators used for different systems in acid-base titrations?
- Because indicators are either weak acids or weak bases (correct)
- Because indicators are either strong acids or strong bases
- Because the hydrolysis constant of indicators is different
- Because the pH range of indicators is different
What is the ratio of the two forms of indicator that the human eye can detect a colour change?
What is the ratio of the two forms of indicator that the human eye can detect a colour change?
What type of titration does not have a suitable indicator?
What type of titration does not have a suitable indicator?
What is the equilibrium constant for the indicator reaction?
What is the equilibrium constant for the indicator reaction?
What is the degree of hydrolysis defined as?
What is the degree of hydrolysis defined as?
What is the hydrolysis constant (Kh) of a weak acid or base?
What is the hydrolysis constant (Kh) of a weak acid or base?
What is the purpose of an indicator in an acid-base titration?
What is the purpose of an indicator in an acid-base titration?
What type of salt will undergo hydrolysis in an aqueous solution?
What type of salt will undergo hydrolysis in an aqueous solution?
What is the relationship between the hydrolysis constant (Kh) and the acid dissociation constant (Ka) and base dissociation constant (Kb)?
What is the relationship between the hydrolysis constant (Kh) and the acid dissociation constant (Ka) and base dissociation constant (Kb)?
What is the colour of the indicator methyl orange in an acidic solution?
What is the colour of the indicator methyl orange in an acidic solution?
What is the general equation for the hydrolysis of a salt (BA)?
What is the general equation for the hydrolysis of a salt (BA)?
What is the unit of the hydrolysis constant (Kh)?
What is the unit of the hydrolysis constant (Kh)?
What type of salt does not undergo hydrolysis?
What type of salt does not undergo hydrolysis?
What is the purpose of an indicator in acid-base titrations?
What is the purpose of an indicator in acid-base titrations?
What is the pH range of Cresol red indicator?
What is the pH range of Cresol red indicator?
What is the importance of buffer systems in biological systems?
What is the importance of buffer systems in biological systems?
What is the condition for precipitation to occur in a solution?
What is the condition for precipitation to occur in a solution?
What is the purpose of adding a group reagent in qualitative analysis?
What is the purpose of adding a group reagent in qualitative analysis?
What is the reason for the precipitation of soap from a solution?
What is the reason for the precipitation of soap from a solution?
What is the criterion for an electrolyte to be unsaturated?
What is the criterion for an electrolyte to be unsaturated?
What is the relationship between the ionic product and solubility product in a saturated solution?
What is the relationship between the ionic product and solubility product in a saturated solution?
What is the process of separating soap from a solution by adding a salt known as?
What is the process of separating soap from a solution by adding a salt known as?
What type of electrolyte is represented by the formula Ksp = [Ag+]2[CrO42-]?
What type of electrolyte is represented by the formula Ksp = [Ag+]2[CrO42-]?
What is the purpose of adding a concentrated solution of NaCl to a soap solution?
What is the purpose of adding a concentrated solution of NaCl to a soap solution?
What happens when the ionic product exceeds the solubility product?
What happens when the ionic product exceeds the solubility product?
What is the condition required for the precipitation of group second radicals such as Pb+2?
What is the condition required for the precipitation of group second radicals such as Pb+2?
What is the term for the process of adding an electrolyte to a solution to increase the concentration of one of the ions?
What is the term for the process of adding an electrolyte to a solution to increase the concentration of one of the ions?
What is the term for the product of the concentrations of the ions in a solution raised to their respective stoichiometric coefficients?
What is the term for the product of the concentrations of the ions in a solution raised to their respective stoichiometric coefficients?
What is the term used to describe the product of concentrations of H+ and OH- ions in water at a particular temperature?
What is the term used to describe the product of concentrations of H+ and OH- ions in water at a particular temperature?
What type of electrolyte is water, and what is its characteristic?
What type of electrolyte is water, and what is its characteristic?
What is the reaction between FeSO4 and KCN, resulting in the formation of K4[Fe(CN)6] and K2SO4?
What is the reaction between FeSO4 and KCN, resulting in the formation of K4[Fe(CN)6] and K2SO4?
What is the term used to describe salts that furnish more than one cation or more than one anion when dissolved in water?
What is the term used to describe salts that furnish more than one cation or more than one anion when dissolved in water?
What is the phenomenon where the solubility of a soap is decreased in the presence of a high concentration of ions?
What is the phenomenon where the solubility of a soap is decreased in the presence of a high concentration of ions?
What is the term used to describe the process of neutralization, where an acid and a base react to form salt and water?
What is the term used to describe the process of neutralization, where an acid and a base react to form salt and water?
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