# 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?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Average Rate of Reaction concept. You can view video lessons to learn Average Rate of Reaction. Or if you need more Average Rate of Reaction practice, you can also practice Average Rate of Reaction practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofConsider the reaction:2H3PO4 → P2O5 + 3H2OUsing the informat...as medium difficulty.

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Farooqui's class at CSUF.