Pure water self-ionises. This endothermic reaction is represented by the equation:
Which of the following statements is true for pure water between the temperatures of 0 °C and 100 °C?
- The concentrations of H^+ (aq) and OH^– (aq) are equal between 0 °C and 100 °C.
- An increase in temperature causes the pH to fall.
- An increase in temperature causes the electrical conductivity to decrease.
A. 1 and 3 only
B. 3 only
C. 1 only
D. 1 and 2 only
E. 2 only