Post Utme Chemistry Past Questions and Answers

Question 591:

What volume of 0.5 mol/dm³ H2So4 will exactly neutralize 20cm³ of 0.1 moldm³ NaOH solution?

A. 5.0cm^-3
B. 6.8cm^-3
C. 8.3cm^-3
D. 2.0cm^-3

Question 592:

A compound contains 40% carbon, 6.7% hydrogen and 54.3% oxygen. If the molar mass of the compound is 180; find the molecular formula.
(H =1,C =12; O = 16)

A. CH20
B. C3H6O3
C. C6H2Oc
D. C6H2O3

Question 593:

0.9dm³ of a gas at s.t.p was subjected by means a moveable piston to two times the original pressure with the temperature being now kept at 364k.
When is the volume of the gas in dm3 at this pressure?

A. 2.0
B. 4.5
C. 6.0
D. 8.3

Question 594:

If 24.83cm³ of 0.15M NaOH is titrated to its end point with 39.45cm³, of HCl
what is the morality of the HCl?

A. 0.094M
B. 0.150M
C. 0.940M
D. 1.500M

Question 595:

Which of the following compound is covalent?

A. CaO
B. C2H6
C. MgCl2
D. Na2O