Select the correct answer. What inference can be drawn from the graph?
A+B C+D
45
40
35
30
25
20
15
10
5
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Time (seconds)
A.
B.
C.
OD.
OE.
The reaction between A and B is reactant favored.
The amount of product is greater than the amount of reactant.
The reaction uses all its reactants to form products.
The reaction reaches equilibrium at 1.5 seconds.
The amount of reactants is highest at equilibrium.

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.