A student is exploring the reaction seen here: The student states that adding carbon dioxide or another acid to the system will shift the reaction forward. Is the student correct? How would you score this student's work? (1 point) Responses Completely incorrect. Both of the student's additions would disturb the reaction and cause it to reverse to the left. Completely incorrect. Both of the student's additions would disturb the reaction and cause it to reverse to the left. Correct, the student properly identifies the direction of the equilibrium shift. Correct, the student properly identifies the direction of the equilibrium shift. Mostly correct. The student is correct that the addition of an acid would shift the reaction forward, but the additional carbon dioxide would reverse it. Mostly correct. The student is correct that the addition of an acid would shift the reaction forward, but the additional carbon dioxide would reverse it. Mostly correct, since carbon dioxide is a reactant, more would shift the reaction to the right. The additional acid would add extra hydrogen ions and would shift the reaction left or reverse it. Mostly correct, since carbon dioxide is a reactant, more would shift the reaction to the right. The additional acid would add extra hydrogen ions and would shift the reaction left or reverse it. Skip to navigation

Answer 1

Mostly correct. The student is correct that the addition of an acid would shift the reaction forward, as it would consume the added acid. However, the additional carbon dioxide, being a reactant in the reaction, would actually shift the reaction to the right to produce more products. Therefore, adding carbon dioxide would not cause the reaction to reverse to the left as the student stated. Overall, I would score this student's work 1 point out of 1 point for being mostly correct in identifying the direction of the equilibrium shift.