- #1
Kyoma
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1) If you connect zinc and copper with a wire and submerge them into aqueous sodium chloride, a reaction will occur, such that there is a potential difference between the metals. Why? Aqueous sodium chloride is not an acid nor is sodium less reactive than zinc/copper such that zinc/copper would displace sodium from its solution.
2) If you add zinc oxide (solid) into sulfuric acid in excess, the final pH of the solution would be slightly higher than 7. Why? Zinc oxide reacts in the acid to form zinc hydroxide and water, which are of pH 7 and that zinc oxide in its solid form is also pH 7.
2) If you add zinc oxide (solid) into sulfuric acid in excess, the final pH of the solution would be slightly higher than 7. Why? Zinc oxide reacts in the acid to form zinc hydroxide and water, which are of pH 7 and that zinc oxide in its solid form is also pH 7.