Question

Question #04e3a

Answer 1

0.202M

Explanation:

Balanced equation is:

Fe + 2AgNO3 = Fe(NO3)2 + 2Ag
`darr` ........`darr`
56g .....2(108)g

so,
`darr`....... `darr`
0.2g ...... 1.2g

means 0.2g iron reacts with 1.2g of AgNO3 completely to displace all silver.
now,
Molarity, M=(number of moles of solute)/(volume of solution in litres)
`rArrM={(1.2)/(170)}/{35*10^(-3)} =0.202M`