Editing Problems On Equilibrium With ICE BOX

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1. Initially, a 1.0-liter of container contains 2.00moles of NO and 1.00moles of O2. At equilibrium, 0.750moles of NO have reacted. What are the equilibrium concentrations of all the species and K (include units)? The reversible reaction is 2 NO(g) + 1 O2 (g) <==> 2 NO2 (g) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2. For reaction 2 <nowiki>SO</nowiki>2(g) + O2(g) <--> 2 <nowiki>SO</nowiki>3(g) 
a 1.00-L container initially has 2.00 moles of <nowiki>SO</nowiki>3. If 1.25moles of <nowiki>SO</nowiki>3 remain at equilibrium, what are the equilibrium concentrations of all species and then calculated K (equilibrium constant). Include units of K? 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3. The reaction <nowiki>PCl</nowiki>5(g) <---> <nowiki>PCl</nowiki>3(g) + Cl2(g) occurs in a 1.0-liter container. Initially, the container holds 3.25moles of <nowiki>PCl</nowiki>3 and 6.40moles of Cl2. At equilibrium, 1.45moles of <nowiki>PCl</nowiki>3 reacted. What is the equilibrium concentration of all species and the equilibrium constant (K)? 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Answer: 
1. [NO]E = 1.25M, [O2]E = 0.625M, [NO2]E = 0.750M, K=0.576M-1 
2. [SO3]E = 1.25M, [SO2]E = 0.750M, [O2]E = 0.375M, K=7.41M-1 
3. [PCl3]E = 1.80M, [Cl2]E = 4.95M, [PCl5]E = 1.45M, K=6.14M

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