11. How many moles of HC) will be in 250 cm' portion of the acid of concentration 2 mol dm³ ?
A. 1.5mol
B. 1.0 mol
C. 0.5 mol
D. 0.25 mol
12. Given that Avogadro constant is 60.2 x 102, calculate the number of atoms in 0.01 mole of
carbon.
\A, 6.02× 1021
atoms
C. 6.02× 1025 atoms
B. 30.1 ×1023 atoms
D. 12.30 × 1016 atoms
13. The IUPAC name for the compound with the formula CuSO4 is
A. copper (1) tetraoxosulphate (VI)
C. copper trioxosulphate (IV)
B copper (I) tetraoxosulphate (VI)
D. copper (IV) trioxosulphate (I)
14. The unit measure of the amount of substance is the
A. molar mass
B. gramme
C. mole
D. kilogram
15. If 500.0 cm³ of 1.0 M NaOH solution is diluted to 1 dm' with distilled water, calculate the
concentration of the diluted solution.
A. 0.25 mol dm
B. 0.5 mol dm³
C. 1.0 mol dm
D. 2.0 mol dm³
-3
16. A quantity of NaCl was dissolved in 100.0 cm³ of solution to obtain 0.5 M NaCl solution.
Calculate the mass of NaCl solution. [Na-23.0, Cl=35.5]
B. 5.85 g
A. 2.93 g
g
C. 29.25 g
D. 58.50 g
17. Determine the volume of 2.0 M HCI solution which should be diluted with distilled water to
obtain 50 cm³ of 0.1 M HCl solution.
A. 2.5 cm³
3
B. 4.5 cm³
C. 5.0 cm³
D. 25.0 cm³
18. The IUPAC name for HNO3 is
A. dioxonitrate (III) acid.
B. trioxonitrate (IV) acid.
19 A mass of alu
C. trioxonitrate (V) acid.
D. trioxonitrate (III) acid.
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