Comments on: O Level Chemistry: Redox Reaction Question 2 http://www.simplechemconcepts.com/chemistry-question-on-redox-reaction-q2/ O-Level Chemistry Made Easy Sat, 14 Jan 2012 03:43:17 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: sean http://www.simplechemconcepts.com/chemistry-question-on-redox-reaction-q2/comment-page-1/#comment-320 sean Mon, 18 Feb 2008 12:30:31 +0000 http://simplechemconcepts.com/chemistry-question-on-redox-reaction-q2/#comment-320 Consider: A) Sulphur dioxide is a common reducing agent, and not an oxidizing agent. Thus this is incorrect. C) In GCE O Level (Grade 9/10), we learn that Cu (which is below H in the reactivity series) does not react with dilute acid. As such, no reaction and this cannot be the answer. D) Displacement reaction yields Zn + CuSO4 => ZnSO4 + Cu. Cu2+ has been reduced Cu (O oxidation state). Not the answer. B) There is a possibility that Cu2+ being reduced to Cu+ by a Cu metal. One electron is transferred in the process. Consider:

A) Sulphur dioxide is a common reducing agent, and not an oxidizing agent.
Thus this is incorrect.

C) In GCE O Level (Grade 9/10), we learn that Cu (which is below H in the
reactivity series) does not react with dilute acid. As such, no reaction and this
cannot be the answer.

D) Displacement reaction yields Zn + CuSO4 => ZnSO4 + Cu.
Cu2+ has been reduced Cu (O oxidation state). Not the answer.

B) There is a possibility that Cu2+ being reduced to Cu+ by a Cu metal. One
electron is transferred in the process.

]]> By: eric http://www.simplechemconcepts.com/chemistry-question-on-redox-reaction-q2/comment-page-1/#comment-317 eric Mon, 18 Feb 2008 08:16:33 +0000 http://simplechemconcepts.com/chemistry-question-on-redox-reaction-q2/#comment-317 A) is definitely out. C) It should results in formation of Copper (II) Nitrate Salt and water. This contains Cu2+ ions. D) Displacement should results in formation of Cu2+ ions also. As such B) should be the answer. My thoughts. Correct me if i am wrong please. Thanks. A) is definitely out.
C) It should results in formation of Copper (II) Nitrate Salt and water. This
contains Cu2+ ions.
D) Displacement should results in formation of Cu2+ ions also.

As such B) should be the answer.

My thoughts. Correct me if i am wrong please. Thanks.

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