Consider the following equilibrium reaction having gaseous reactants and products. 4HCl + O2 ⇌ 2H2O + Cl2
Which of the following would result from increasing only the concentration of hydrochloric acid?
The concentration of oxygen increases.
The concentration of chlorine decreases.
The concentration of water vapor increases.
The rate of backward reaction increases.

What does the law of increasing costs say? a. as you make more and more of one good or service, you will also make more and more of another. b.as you make less and less of one good or service, you will also make less and less another. c.as you make more and more of one good or service, you will make less and less of another. d.there is no change in production levels when you shift from one good or service to another