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 equilibrium is driven to the left
The equilibrium is driven to the right
There is no effect
More ZnO is produced
Correct answer is C
No explanation has been provided for this answer.
-51.O KJ mol-
+57.3 KJ mol-
+57.O KJ mol-
+51.0 KJ mol-
Correct answer is A
NH4OH = 20cm of 0.1 m
NH4 + HCl → NH4Cl = H2O
Heat of Neutralization of NH4OH
= \(\frac{-102}{2}\) = -51.0 KJ mole-1
Which of these represents a redox reaction?
AgNO3 + NaCl → AgCAl + NaNO3
H2S + Pb(NO3) → PbS + 2HNO3
CaCO3 → CaO + CO2
Zn + 2HCl → ZnCl2 + H2
Correct answer is D
No explanation has been provided for this answer.
3.90 x 102 coulombs
5.50 x 103 coulombs
6.54 x 103 coulombs
2.34 x 104 coulombs
Correct answer is D
No explanation has been provided for this answer.
Which of the following solutions will conduct the least amount of electricity?
2.00 M aqueous solution of NaOH
0.01 M aqueous solution of NaOH
0.01 M aqueous solution of hexanoic acid
0.01 M aqueous solution of sugar
Correct answer is D
No explanation has been provided for this answer.