Titrations
Chemistry ⇒ Analytical Chemistry
Titrations starts at 11 and continues till grade 12.
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See sample questions for grade 12
Describe the main characteristics of a good primary standard.
Describe the role of a buffer in a titration.
Describe the steps involved in preparing a standard solution for titration.
Explain the difference between the endpoint and the equivalence point in a titration.
A 0.250 g sample of KHP (molar mass = 204.22 g/mol) is titrated with NaOH. If 15.0 mL of NaOH is required to reach the endpoint, what is the concentration of the NaOH solution?
A 0.300 M solution of NaOH is used to titrate 40.0 mL of H2SO4. If 60.0 mL of NaOH is required, what is the concentration of the H2SO4?
A 0.500 g sample of oxalic acid (H2C2O4, molar mass = 90.03 g/mol) is titrated with 0.100 M NaOH. How many mL of NaOH are required to reach the endpoint?
A 25.0 mL sample of acetic acid is titrated with 0.100 M NaOH. If the equivalence point is reached after adding 32.5 mL of NaOH, what is the concentration of the acetic acid?
In a redox titration, which of the following can act as an indicator? (1) Phenolphthalein (2) Starch (3) Methyl orange (4) Thymol blue
Which indicator is commonly used in the titration of a strong acid with a strong base? (1) Methyl orange (2) Phenolphthalein (3) Starch (4) Potassium dichromate
Which of the following errors will result in a higher calculated concentration of analyte? (1) Overshooting the endpoint (2) Using a dirty burette (3) Reading the burette from above eye level (4) Using an impure primary standard
Which of the following is a primary standard substance? (1) Sodium hydroxide (2) Potassium hydrogen phthalate (3) Hydrochloric acid (4) Sulfuric acid
During a titration, the color change of the indicator occurs at the __________.
The point in a titration where the number of moles of titrant equals the number of moles of analyte according to the reaction equation is called the __________ point.
The process of determining the exact concentration of a solution using a primary standard is called __________.
The process of gradually adding one solution to another until the reaction is complete is called __________.
True or False: In a titration, the analyte is always placed in the burette.
True or False: In a titration, the analyte is the solution of unknown concentration.
True or False: The burette is used to deliver the analyte in a titration.
True or False: The endpoint of a titration always coincides exactly with the equivalence point.
