O Not set A 90.3/100 6/29/2015 03:31 PM Gradebook Print Calculator Periodic Tabl

Question

O Not set A 90.3/100 6/29/2015 03:31 PM Gradebook Print Calculator Periodic Table Question 18 of 25 Map A this question has been customized by sapling learning Paul DiMilla at Northeastern University At equilibrium at an unspecified temperature the concentrations resulting from the reaction below were IN2leq [O2ded 0.100 M & leq 0.400 M NO If more NO is added, bringing its concentration to 0.700 M, what will the concentration of NO be after equilibrium is re-established at the same unspecified temperature? Number M Previous Give Up & View Solution Check Answer Next Exit Hint

Explanation / Answer

...........N2 + O2 ==> 2NO
E.........0.1....0.1....0.4
add 0.3.................0.7
new I.....0.1....0.1....0.7
C..........+x......+x....-2x
new E....0.1+x..0.1+x...0.7-2x

Use the first E line to calculate Kc. Substitute the equilibrium conditions and solve for kc.

Then substitute the NEW E line into the Kc expression and solve for x, 0.1_x and 0.7-2x

The answer you should get is 0.6 M

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