Chapter 13 Kinetics 1. Consider the reaction: 2 P205(g)2 P2(g)+ 5 02 (9) a. Writ

Question

Chapter 13 Kinetics 1. Consider the reaction: 2 P205(g)2 P2(g)+ 5 02 (9) a. Write the expression for the rate of the reaction in terms of the change in concentration of each of the reactants and products b. When P205 gas is decreasing at a rate of 0.33 M/s 1) How fast is phosphorus gas increasing? (Include equation, substitution, and answer in correct units and significant digits) 2) How fast is oxygen gas increasing? (Include equation, substitution, and answer in correct units and significant digits)

Explanation / Answer

for the reaction 2P2O5(g) --------->2P2(g)+ 5O2(g)

rates are related as -d[P2O5]/dt*2 = d[P2]/dt*2+d[O2]/dt*5

whee 2, 2 and 5 are coefficients of P2O5, P2 and O2 respectively in the reaction

given -d[P2O5]/dt=0.33

d[P2]/dt= (2/2)* 0.33 =0.33M/s

d[O2]/dt= (5/2)*0.33=0.825 M/s

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