Question

50g of 10% barium chloride is mixed with 50g of 10% sulphate in a closed vessel. after sometime 6.83g of barium sulphate was precipitated. Besides, the reaction mixture contained 90g of water and sodium chloride. what is the amount of sodium chloride formed?​

Answer 1

When silver nitrate (AgNO

3

) reacts with sodium chloride (NaCl) a white precipitate of silver chloride (AgCl) is formed which is highly insoluble in water, along with formation of sodium nitrate (NaNO

3

).

Since (AgCl) is insoluble in water it will precipitate out and (NaNO

3

) is soluble in water so it will remain dissolved in the mixture. This reaction is an example of double displacement reaction and it occurs as follows:-

AgNO

3

+ NaCl→AgCl + NaNO

3