How will the equilibrium shift if the following changes are made? State if the reaction will shift to the left or right and explain why it will shift in that direction. (10 points each. 5 points for correct answer, 5 points for correct explanation) PCl5 (g)+heat ⇌ PCl3 (g)+ Cl2 (g)
a. Temperature is increased
Chemical Equilibrium You must show all work on the problems involving calculations below to receive full credit.
b. Pressure is increased
c. Cl2 is added
d. PCl3 is removed as it is formed

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.