Question

ANALYSIS, MAKING OBSERVATIONS AND CALCULATING CONCENTRATIONS Prelaboratory Questions 1. (2 marks) Provide a maximum half-page summary of the experimental procedure. This should take the form of a flowchart (formal formatting not required) that shows the main steps of the procedure, rather than a list; remember to both summarize and paraphrase. (Use a separate page.) 2. (1.5 marks) Write the missing chemical formula or name for each of the following substances listed in the procedure. Chemical Name ascorbic acid potassium iodide Formula I2 3. (0.5 marks) Suggest a reason why, in the ingredient list, we have a combination of potassium iodide and iodine in the tincture of iodine solution. 4. (1 mark) Calculate the molarity of KI in a 400 mL solution of tincture of iodine if the solution contains 5% (w/v) KI.

          ANALYSIS, MAKING OBSERVATIONS AND
CALCULATING CONCENTRATIONS
Prelaboratory Questions
1. (2 marks) Provide a maximum half-page summary of the experimental procedure. This
should take the form of a flowchart (formal formatting not required) that shows the
main steps of the procedure, rather than a list; remember to both summarize and
paraphrase. (Use a separate page.)
2. (1.5 marks) Write the missing chemical formula or name for each of the following
substances listed in the procedure.
Chemical Name
ascorbic acid
potassium iodide
Formula
I2
3. (0.5 marks) Suggest a reason why, in the ingredient list, we have a combination of
potassium iodide and iodine in the tincture of iodine solution.
4. (1 mark) Calculate the molarity of KI in a 400 mL solution of tincture of iodine if the
solution contains 5% (w/v) KI.

ANALYSIS, MAKING OBSERVATIONS AND
CALCULATING CONCENTRATIONS
Prelaboratory Questions
1. (2 marks) Provide a maximum half-page summary of the experimental procedure. This
should take the form of a flowchart (formal formatting not required) that shows the
main steps of the procedure, rather than a list; remember to both summarize and
paraphrase. (Use a separate page.)
2. (1.5 marks) Write the missing chemical formula or name for each of the following
substances listed in the procedure.
Chemical Name
ascorbic acid
potassium iodide
Formula
I2
3. (0.5 marks) Suggest a reason why, in the ingredient list, we have a combination of
potassium iodide and iodine in the tincture of iodine solution.
4. (1 mark) Calculate the molarity of KI in a 400 mL solution of tincture of iodine if the
solution contains 5% (w/v) KI.

Added by Samantha W.

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