Question

This states that the total pressure exerted by a mixture of gases is equal to the sum of the pressures exerted by each one independently. Ptotal = Pa + Pb +Pc...

Answer 1

This statement is known as Dalton's law of partial pressures and is commonly used to describe the behavior of a mixture of gases. According to this law, the total pressure exerted by a mixture of gases is equal to the sum of the pressures exerted by each gas component when they are considered separately.

Mathematically, the law can be stated as:
P(total) = P(a) + P(b) + P(c) + ...

Where P(total) is the total pressure exerted by the mixture, and P(a), P(b), P(c), etc. are the individual pressures exerted by each gas component in the mixture.