Question

Henry's law is P = KC. Which statement best describes the meaning of this law? As the pressure above a gas in solution decreases, the concentration of gas in solution increases. As the pressure above a gas in solution increases, the concentration of gas in solution decreases As the pressure above a gas in solution increases, the concentration of gas in solution also increases As the concentration of a gas in solution increases. Henry's constant increases. As the concentration of a gas in solution decreases, Henry's constant decreases.

Answer 1

Henry Law is P = k C

Here P is partial pressure of gas , C is concentration of gas in liquid ,and k is Henry Constant.

Sometimes Henry law is also written as C = k' P

Don't be confused both are same thing except the constant of proportionality. Only the value and unit of constant get change while the basic concept of formulas remain same.

Now from P = k C, we can see that pressure above liquid and concentration of gas in liquid are directly proportional to each other.

So, As the pressure above the gas in solution increases,the concentration of the gas in the solution also increases.

Constant of proportionality only depend on nature of gas,nature of solution and temperature.