Question

You are given solution of AgNO3. Which of the following do you think can not displace Ag from AgNO3 solution?
a. Mg
b. Zn
c. Au
d. Cu

Answer 1

Bhai Au gold kunki ye less reactive hota hai..

..... ☀☀jai bajarang bali ☀☀

Answer 2

Answer : The correct option is, (C) Au

Explanation :

Single-displacement reaction : It is a type of chemical reaction in which the most reactive metal displaces the least reactive metal from ts solution.

According to the reactivity series, magnesium, zinc and copper are most reactive metals than the silver and gold is the least reactive metal than the silver.

$Zn+AgNO_3\rightarrow ZnNO_3+Ag$

$Mg+AgNO_3\rightarrow MgNO_3+Ag$

$Cu+AgNO_3\rightarrow CuNO_3+Ag$

$Au+AgNO_3\rightarrow \text{No reaction}$

So, the gold (Au) is the metal that can not displace the silver (Ag) from the silver nitrate $(AgNO_3)$ solution.

Hence, the correct option is, (C) Au