Question

If a copper wire is placed in a beaker containing 1 M AgNO3, the clear solution is observed to turn blue and a flaky silver color coating appears on the copper wire. Write a net ionic equation to explain this observation.

Answer 1

Answer: $Cu+2Ag^+\rightarrow Cu^{2+}+2Ag$

Explanation:

Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.

Example: $Cu+2AgNO_3\rightarrow Cu(NO_3)_2+2Ag$

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

The given chemical equation is:

$Cu+2Ag^++2NO_3^-\rightarrow Cu^{2+}+2NO_3^-+2Ag$

The ions which are present on both the sides of the equation are nitrate ions. and hence are not involved in net ionic equation.

Hence, the net ionic equation is $Cu+2Ag^+\rightarrow Cu^{2+}+2Ag$

Answer 2

Answer:

 B and E

Explanation: