Jamb Chemistry Past Questions For Year 2009

Question 21

What volume of 1.5M solution of KOH would contain 0.045 moles

jamb 2009

• A. 67.50 cm³
• B. 30.00 cm³
• C. 6.75 cm³
• D. 3.00 cm³

Question 22

The acid used in electrolysis of water is dilute?

jamb 2009

• A. HNO₃
• B. CH₃COOH
• C. H₂SO₄
• D. HCl

Question 23

In the diagram above, which of the curves represents the evolution of oxygen with time in the equation 2KClO3(s) → 2KCl(s) + 3O2(g)?

jamb 2009

• A. X
• B. Y
• C. Z
• D. R

Question 24

Two equal bulbs, one containing ammonia and the other nitrogen are opened mouth - to - mouth to each other at room temperature. The entropy in the mixture of gases is likely to?

jamb 2009

• A. remain unchange
• B. increase
• C. decrease
• D. change

Question 25

C(s) + H2O(g) → H2(g) + CO2(g)

ΔG for the reaction above at 1300k is -43KJ. At this temperature, the reaction is?

jamb 2009

• A. not feasible
• B. at equilibrium
• C. feasible
• D. exothermic