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WorksheetsAssessment
Total questions: 10
Worksheet time: 6mins
1. What is the pH of a 0.01 M HCl solution?
1
3
4
2
2. Calculate the molarity of a solution containing 5 g of NaCl in 250 mL of water.
0.125 M
0.500 M
0.3424 M
0.750 M
4. What is the concentration of OH- in a solution with a pH of 9?
1.0e-5 M
1.0e-4 M
1.0e-3 M
1.0e-6 M
6. If 25 mL of 0.5 M acetic acid is diluted to 100 mL, what is the new concentration?
0.125 M
0.25 M
0.75 M
0.05 M
8. Calculate the amount of NaOH needed to neutralize 50 mL of 0.1 M H2SO4.
50 mL
200 mL
100 mL
75 mL
9. If the solubility of CaF2 is 0.0001 M, what is the Ksp?
3.0e-09
4.0e-08
2.5e-08
1.0e-07
10. What is the pH of a buffer solution made from 0.1 M acetic acid and 0.1 M sodium acetate?
4.76
5.00
3.50
6.25
Why is a mass-balance equation valid?
Why do molar concentration of some species appear as multiples in charge-balance equations?
The charge-balance equation is valid because
(a)
