We place 3.2 mol PCl5 in a 2.0 L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask? PCl5(g) PCl3(aq) + Cl2(g)
Kc = 0.47
A) 0.55 M
B) 0.27 M
C) 0.66 M
D) 0.11 M
E) 0.32 M

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

pv=nrt

explanation: