# Problem: Thermodynamic data are given below (at T = 25. °C) and may be of use in doing this problem.Phosphoric acid (H3PO4) may be prepared by adding tetraphosphorus decaoxide (P4O10) to water (H2O), by the process                P 4O10(s) + 6 H2O(I) → 4 H3PO4(s)a) What are ΔS°rxn and ΔG°rxn for the below reaction, at T = 25.0 °C?b) Give the correctly balanced formation reaction for H 3PO4(s).

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Thermodynamic data are given below (at T = 25. °C) and may be of use in doing this problem.

Phosphoric acid (H3PO4) may be prepared by adding tetraphosphorus decaoxide (P4O10) to water (H2O), by the process

P 4O10(s) + 6 H2O(I) → 4 H3PO4(s)

a) What are ΔS°rxn and ΔG°rxn for the below reaction, at T = 25.0 °C?

b) Give the correctly balanced formation reaction for H 3PO4(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 Gibbs Free Energy concept. You can view video lessons to learn Gibbs Free Energy. Or if you need more Gibbs Free Energy practice, you can also practice Gibbs Free Energy practice problems.

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