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WorksheetsCHM 131 Standardization of NaOH
Total questions: 10
Worksheet time: 6mins
What is this piece of apparatus called
Pipette
Burette
Janette
Cuvette
What is the white tile/paper for in a titration experiment?
To help clearly see the color change
To protect the conical flask
To add extra height
To assist the reaction
A lab group completes three runs of a standardization of NaOH. The calculated molarity of each run is 1.002 M, 1.012 M, 1.008 M. What is the percent deviation of the second run?
0.3349 %
1.005 %
0.4965 %
0.6651 %
What is the main purpose of acid-base titrations?
To test if reactants react.
To calculate the concentration of unknown analyte.
To calculate the concentration of known analyte.
To test quality of reactants.
What is an equivalence point?
It is the point when enough analyte has been added.
It is the point when the amount of added titrant is equal to the amount of analyte in the solution.
It is the point when the volume of titrant is equivalent the volume of analyte.
It is the point when the concentration of titrant added is equivalent to the volume of analyte.
The following neutralization reaction occurs in the lab.
HCl + KOH --> H2O + KCl
If a student uses 2.50 g of HCl powder to form a solution, that is neutralized by 12.5 mL of KOH. What is the molarity of the potassium hydroxide?
5.49 M
0.857 M
12.5 M
0.00729 M
Consider the following neutralization reaction:
2HCN (aq) + CaCO3 (s) ---> Ca(CN)2 (aq) + CO2 (g) + H2O (l)
What is the Molarity of a hydrocyanic acid solution if 34.80 mL is needed to neutralize 0.9604 g of calcium carbonate?
0.5515 M
1.813 M
0.2758 M
0.1379 M
