To an aqueous solution of Na2SO3 added 25 ml of 0.1n of I2 solution.4 ml of 0.09 n Na2S2O3 solution was used for the titration of excess I.Find the mass of Na2SO3


Answer from: Milena Egorova:
1,7 K...


I2+2Na2S2O3=2NaI+Na2S4O6
Cn1V1=Cn2V2
Cn(I2)=(C(Na2S2O3)*V(Na2S2O3)):(V(I2))=(10,25*0,1):10=1,025:10=0,1025.
The mass is 0.1025


Related Questions:

chemistry

Ask the questions that interest you, even if they seem silly, childish, strange, funny, embarrassing, uncomfortable, or abstruse.

ASKRUS.Guru 2019-2021©