Question

70 g nacl is dissolved in 1 l of water. The total number of ions of na+ and cl in 1 ml of this solution will be

Answer 1

Explanation:

5.85 g of NaCl = 0.1 mol

1 L solution contain NaCl = 0.1 mol

1 ml solution contain NaCl = 0.0001 mol

one NaCl ionized Na+ and Cl- so that produce 2 ions

Total ion mole in 1 ml = 2x0.0001 mol

Number of iron in 1 ml= 2x0.0001x6.023x1023

Number of iron in 1 ml = 1.2x1020 ions