A colourless gas with characteristics odour which dissolves in water to form an alkaline solution is
ammonia
carbon(IV)oxide
hydrogen chloride
sulphur (IV) oxide
sulphur (VI) oxide
Correct answer is A
No explanation has been provided for this answer.
In which of the following equations can Le-chartelier’s principle be applied?
H2(g)+S(g) → H2(g)
2H2S(g) + O2 (g) → 2H2O(l) + 2SO2(g)
N2(g) +3H2(g) ⇌ 2NH3(g)
NaOH(aq) +CO2(g) → Na2CO3(aq) + H2O(l)
S(s) + 02(g) → SO2(g)
Correct answer is C
According to Le Chatelier's Principle, this will be favored if you lower the temperature. The system will respond by moving the position of equilibrium to counteract this - in other words by producing more heat. To get as much ammonia as possible in the equilibrium mixture, you need as low a temperature as possible
In which of these groups will all the substances be insoluble in water?
Na2CO3, KNO3,(NH4)2C03
NaHCO3, PbSO4, CaSO4
K2C03, CaSO4, AgNO3
PbCl2, NaCl, ZnCl2
ZnCO3, BaSO4,AgCl
Correct answer is E
No explanation has been provided for this answer.
What is the maximum number of electrons that an f-orbital can accommodate?
2
6
7
10
14
Correct answer is E
No explanation has been provided for this answer.
A measure of the degree of disorderliness in a chemical system is known as the
activation energy
enthalpy
entropy
equilibrium
free energy.
Correct answer is C
No explanation has been provided for this answer.