A student determined the equilibrium concentration in the following equation by neglecting the x term in the denominator. Was she justified or not in this approximation and why? K = 4.0 * 10-2 = 
A) Yes, the concentration > K, so the x can be ignored.
B) Yes, the value of x determined in this way is less than 0.05, so it can be ignored.
C) No, the value of x determined in this way significantly reduces the denominator.
D) No, the value of x can never be ignored in solving an algebra problem.
E) No, the value of K is much less than 1 so x cannot be ignored.
Correct Answer:
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