A sample of seawater has a pH of 8. determine the new pH of the sample if the hydrogen ion concentration is increased by a factor of 100

Explanation:

pH = - log[H⁺]

8 = - log[H⁺]

[H⁺] = 10⁻⁸

if this concentration of hydrogen ion increases to  100 times

New hydrogen ion concentration

[H⁺] = 10⁻⁸ x 10²

= 10⁻⁶

pH = - log[10⁻⁶]

= 6

new pH will be 6 .

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.