Chemistry Past Questions and Answers

C_(s) + 2S_(g) → CS_2(g)
ΔH = +89 kJ mol^-1
The chemical equation above implies that

2SO_2(g) + O_2(g) ↔ 2SO_3(g)
ΔH = -189 kJ mol^-1
The equilibrium constant for the reaction above is increased by

3Cu_(s) + 8HNO_3(aq) 3Cu(NO₃)_2(aq) + 4H₂O_(l) + 2NO_(g)
In the equation above, copper is

When ΔH is negative, a reaction is said to be

As the concentration of an electrolyte reduces, the conductivity