Question

0,100 M Na2S2O8 vs 0,200 M Na2S2O8

Answer 1

0,100 M and 0,200 M are treated as 0.100 M and 0.200 M

Molar mass of Na₂S₂O₈ = 238 g/mol

So, 1 mole of Na₂S₂O₈ = 238 g

0.1 mole of Na₂S₂O₈ = 0.1 x 238 g = 23.8 g

0.100 M Na2S2O8

So, 0.100 moles of Na2S2O8 in 1000 mL of solution

23.8 g of Na2S2O8 in 1000 mL of solution

Molar mass of Na₂S₂O₈ = 238 g/mol

So, 1 mole of Na₂S₂O₈ = 238 g

0.2 mole of Na₂S₂O₈ = 0.2 x 238 g = 47.6 g

0.200 M Na2S2O8

So, 0.200 moles of Na2S2O8 in 1000 mL of solution

47.6 g of Na2S2O8 in 1000 mL of solution

Hence, 0.100 M Na2S2O8 vs 0.200 M Na2S2O8

= 23.8 g of Na2S2O8 in 1000 mL of solution vs 47.6 g of Na2S2O8 in 1000 mL of solution.