Question

Consider the reaction

2H3PO4→P2O5+3H2O

Using the information in the following table, calculate the average rate of formation of P2O5 between 10.0 and 40.0 s.

Time (s)	0	10.0	20.0	30.0	40.0	50.0
[P2O5] (M)	0	1.00×10−3	4.00×10−3	5.80×10−3	7.00×10−3	7.60×10−3

Express your answer numerically in molar per second.