A certain weight of sodium Iodine and sodium chloride mixture when treated with sulphuric acid was found to give the same weight (as that of mixture) of sodium sulphate. The percentage composition of NaCl is

A certain weight of sodium Iodine and sodium chloride mixture when tre

1.	A certain weight of sodium Iodine and sodium chloride mixture when treated with sulphuric acid was found to give the same weight (as that of mixture) of sodium sulphate. The percentage composition of NaCl is
Answer» `18.86` `52.23` `35.57` `71.14` Solution :`2NaCl+H_(2)SO_(4)rarrNa_(2)SO_(4)+2HCl` `2NaI+H_(2)SO_(4)rarrNa_(2)SO_(4)+2HI` Let the wt of the mixture = 1 g `{:(2xx58.5g NaCl" gives",142G Na_(2)SO_(4)),(XG NaCl" gives",142 xg Na_(2)SO_(4)),(,117):}` 300 g of NaI gives 142g `Na_(2)SO_(4)` (1-x)g of NaI gives `((1-x)xx142)/(300)gNa_(2)SO_(4)` `(142x)/(117)+((1-x)xx142)/(300)=1impliesx=0.7114g` % of `NaCl=(0.7114)/(1)xx100=71.14`