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Which equation represents conservation of charge?

January 2020 NY Regents Chemistry Exam


38 Which equation represents conservation of charge?


Solution: Conservation of charge means that the total charge to the left of the arrow must be equal to the total charge to the right of the arrow. In equation 2, we have two -1 charges on the left (total charge is -2) and 2e- on the right (total charge is -2).

Answer: 2


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