Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
The indicator used in neutralizing CH3COOH and NaOH solution has pH range of
3-5
7-8
8-103
10-12
Correct answer is C
No explanation has been provided for this answer.
Conductivity measurement
Measurement of pH
Measurement of heat of neutralization
Action on starch iodide paper
Correct answer is D
No explanation has been provided for this answer.
Which of the following processes is an endothermic reaction?
Dissolving NH4CI crystals in water
Addition of concentrated H2SO4
Dissolving NaOH pellets in water
Passing SO3 gas into water
Correct answer is A
No explanation has been provided for this answer.
formation
hydration
neutralization
solution
Correct answer is C
No explanation has been provided for this answer.
1.12dm3
2.24dm3
5.6dm3
56.0dm3
Correct answer is C
2NaHCO3(s) \(\rightarrow\) 2Na2CO 3(S) + CO 2(g) + H2O(g)
2 moles of 2NaHCO3(s) produces 22.4dm3 of CO2
0.5 moles of 2NaHCO3 will produce \(\frac{0.5 \times 22.4}{2}\)
= \(\frac{11.2}{2}\)
= 5.6 dm3