A chemical engineer is studying the rate of this reaction.

2H ₃ PO ₄ (aq) ? P ₂ O ₅ (aq) + 3H ₂ O(aq)

He fills a reaction vessel with H ₃ PO ₄ and measures its concentration as the reaction proceeds. Here?s graph of his data:

Use this graph answer the following questions:

Transcribed Image Text:

[H₂PO₂] (M) 0.8 0.6 0.4 0.2+ 0+ 20 40 60 t (seconds) 888.8 80 100 What is the half life of the reaction? Round your answer to 2 significant digits. Suppose the rate of the reaction is known to be first order in H3PO4. Calculate the value of the rate constant k. Round your answer to 2 significant digits. Also be sure you include the correct unit symbol. Predict the concentration of H3PO4 in the engineer's reaction vessel after 180. s seconds have passed. Assume no other reaction is important, and continue to assume the rate is first order in H3PO4. Round your answer to 2 significant digits. ¹1/2 = s |k=|| [H₂PO₂] = M [H₂PO₂] (M) 0.8 0.6 0.4 0.2+ 0+ 20 40 60 t (seconds) 888.8 80 100 What is the half life of the reaction? Round your answer to 2 significant digits. Suppose the rate of the reaction is known to be first order in H3PO4. Calculate the value of the rate constant k. Round your answer to 2 significant digits. Also be sure you include the correct unit symbol. Predict the concentration of H3PO4 in the engineer's reaction vessel after 180. s seconds have passed. Assume no other reaction is important, and continue to assume the rate is first order in H3PO4. Round your answer to 2 significant digits. ¹1/2 = s |k=|| [H₂PO₂] = M

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1 He fills a reaction vessel with H 3 PO 4 and measures its concentration as the re... View the full answer