1. Single Replacement Reactions- Write the correctly balanced chemical cquation

Question

1. Single Replacement Reactions- Write the correctly balanced chemical cquation for each and write which element is more active. Be sure to include state labels on your equations. Note that all metals will form a cation with a +2 charge if they react. a. If a piece of manganese metal is placed into a solution of zinc nitrate, Zn(NO) the manganese begins to dissolve and a precipitate begins to form on the bottom of the test tube. Write a balanced chemical equation for the reaction that is taking place.

Explanation / Answer

complete balanced equation :

Mg (s) + Zn (NO3)2 (aq) ---------------------> Mg(NO3)2(aq) + Zn (s)

explanation:

Mg is more acitive metal . it is due to lower reduction potential in the electronchemical series Eo = -2.37 V

Zn less active metal. it is due to higher reduction potential in the electronchemical series Eo = - 0.76 V

so Mg can replace Zn from its solutions

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