A mixture containing `As_(2)O_(3)` and `As_(2)O_(5)` required 20 mL of 0.05 N iodine solution for titration. The resulting solution is then acidified and excess of Kl was added. The liberated iodine required 1.116 g hypo `(Na_(2)S_(2)O_(3).5H_(2)O)` for complete reaction. Calculate the mass of the mixture. The reactions are :
`As_(2)O_(3)+2l_(2)+2H_(2)OrarrAs_(2)O_(5)+4H^(+)+4l^(-)`
`As_(2)O_(5)+4H^(+)+4l^(-)rarrAs_(2)O_(3)+2l_(2)+2H_(2)O " " `(Atomic weight : As = 75)

Answer

0.025075 g