The total number of ions present in 111 g of CaCl2 is
A
One Mole
B
Two Mole
C
Three Mole
D
Four Mole
Answer:
The correct option is C. Three Mole
Note
Molecular weight of
CaCl2 = 111g/mol
Ions in one calcium chloride molecule = Ca+2 + 2Cl– = 3 ions
Now no. of molecules in 111g/mol of CaCl2 = Avogadros number
= 6.02 × 1023 molecules
So number of ions in 111g/mol of CaCl2
= 3 × 6.02 × 1023 ions
= 3 moles.