Autoionization Reactions are those reactions in which ions or molecules ionizes spontaneously without adding any external reagent.
For Example,
Autoionization of water.
H₂O + H₂O ⇆ H₃O⁺ + OH⁻
Autoionization reaction of Methanol is shown below,
53.6 hectometers is not equal to 0.536 kilometer
Water boils at 100 Degrees Celsius or 212 degrees Fahrenheit
True. Pressure decreases with increasing altitude.