Which half-reaction correctly describes an oxidation? Upper C a (s) plus 2 e superscript minus right arrow upper C a superscript 2 plus (a q). Upper B r subscript 2 plus 2 e superscript minus right arrow 2 upper B r superscript minus. Upper N a superscript plus (a q) right arrow upper N a (s) plus e superscript minus. Upper C r (s) right arrow upper C r superscript 3 plus (a q) plus 3 e superscript minus.

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.

a corroding iron, if that's one of your choices

c. is the answer

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