Answer the following statement(s) true (T) or false (F)Answer the following statement(s) true (T) or false (F)Answer the following statement(s) true (T) or false (F)

Question

Which of the following statements is true about Henry’s Law?
A. The Henry’s Law constant for a particular binary mixture is fixed (i.e. a constant) and does not change with temperature or pressure.
B. Henry’s Law for a particular component in a mixture becomes increasingly valid as the amount of that component in the mixture decreases.
C. Henry’s Law is not valid for sparingly soluble gases dissolved in liquids.
D. One can estimate the Henry’s Law constant for a component in a mixture from the product of the pure component fugacity of that component and the natural logarithm of the infinite dilution activity coefficient.
E. None of the above are true.

Answer 1

A. Incorrect. For example, the data table in Example 11-1 shows significant changes in an oxygen-in-water Henry’s Law constant.
B. Correct. Henry’s Law is a limiting relationship that becomes more valid as the mole fraction of the component of interest goes towards 0. Equation 11.63 mathematically defines this.
C. Incorrect. It is. In fact, this is a very common use of Henry’s Law to model such systems as dissolved oxygen in water, or other atmospheric gases in water.
D. Incorrect. This is close to being true, except for the “natural logarithm” part. Equation 11.64 shows the relationship between the three variables.
E. Incorrect. One statement is true. Review section 11.4.2.