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A Student Determined the Equilibrium Concentration in the Following Equation ×\times

Question 89

Multiple Choice

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 ×\times 10-2 = 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  \times  10<sup>-2</sup> =  A) Yes, the concentration is much greater than 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.


A) Yes, the concentration is much greater than 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.

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