Problem: Consider the reaction:2H3PO4 → P2O5 + 3H2OUsing the information in the following table, Time (s)                          P  2O5 (M)0                                           010                                  1.30 x 10    -320                                  4.30 x 10    -330                                  6.10 x 10    -340                                  7.30 x 10    -350                                  7.90 x 10    -3i) Calculate the average rate of formation of P2O5 between 10.0 and 40.0 s. ii) Rate of formation of P2O5 = 2.00 x 10-4 M/ s. What is the average rate of decomposition of H3PO4 between 10.0 and 40.0 s?

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Problem Details

Consider the reaction:

2H3PO4 → P2O+ 3H2O

Using the information in the following table, 

Time (s)                          P  2O5 (M)

0                                           0

10                                  1.30 x 10    -3

20                                  4.30 x 10    -3

30                                  6.10 x 10    -3

40                                  7.30 x 10    -3

50                                  7.90 x 10    -3

i) Calculate the average rate of formation of P2O5 between 10.0 and 40.0 s.

ii) Rate of formation of P2O5 = 2.00 x 10-4 M/ s. What is the average rate of decomposition of H3PO4 between 10.0 and 40.0 s?

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