Question

Numarul de moli de clorura de cupru (II) care pot reactiona cu 9,0345*10^23 molecule de AgNO3 sunt :
a. 1.25 moli
b. 0.75 moli
c. 1.50 moli
d. 0.35 moli

Answer 1

1 mol AgNO3............6,022×10^23 molecule
x moli AgNO3.........9,0345×10^23 molecule

x = 1,5 moli AgNO3

CuCl2 + 2AgNO3 => Cu(NO3)2 + 2AgCl

1 mol CuCl2.............2 moli AgNO3
x moli CuCl2...........1,5 moli AgNO3

x = 1,5/2 = 0,75 moli CuCl2

R: b)