Makahanap ng mabilis na mga solusyon sa iyong mga problema sa IDNStudy.com. Hanapin ang mga solusyong kailangan mo nang mabilis at tiyak sa tulong ng aming mga bihasang miyembro.

In a reaction of copper sulfate solution and iron nail, what evidence of
chemical reaction is observed?
A. Formation of precipitate
B. Production of light
C. Presence of smoke
D. Change in color​


Sagot :

Answer:

A

Explanation:

(a) Chemical reaction of iron nail with copper sulphate solution in water. Iron displaces copper ions from an aqueous solution of copper sulphate. ... In this reaction, metallic iron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper. Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s).