At a high temperature, the equilibrium constant for the decomposition of hydrogen iodide is 65.0. If the initial concentration of HI is 1.60 M, what is the concentration of hydrogen at equilibrium?
2Hl(g) H2(g) + I2(g)

A. 1.42 M
B. 0.753 M
C. 0.240 M
D. 0.802 M

Given the reaction:
Cu2+(aq) + S2-(aq) CuS(s)
What will happen (a) if CuSO4(aq) is added? And (b) if Na2SO4(aq) is added?

A. (a) Nothing; (b) Less product will form
B. (a) Less product will form; (b) Nothing
C. (a) Nothing; (b) More product will form
D. (a) More product will form; (b) Nothing

Question

At a high temperature, the equilibrium constant for the decomposition of hydrogen iodide is 65.0. If the initial concentration of HI is 1.60 M, what is the concentration of hydrogen at equilibrium?
2Hl(g)  H2(g) + I2(g)

 		A.	1.42 M
 		B.	0.753 M
 		C.	0.240 M
 		D.	0.802 M

Given the reaction:
Cu2+(aq) + S2-(aq)  CuS(s)
What will happen (a) if CuSO4(aq) is added? And (b) if Na2SO4(aq) is added?

 		A.	(a) Nothing; (b) Less product will form
 		B.	(a) Less product will form; (b) Nothing
 		C.	(a) Nothing; (b) More product will form
 		D.	(a) More product will form; (b) Nothing

cuanchi · Answer

A
D