Pick out incorrect statements

Options

A. The volume of `0.1 M FeC_(2)O_(4)` solution required to reduce 200 ml of `0.6 M K_(2)Cr_(2)O_(7)` in acidic medium is 2400 ml
B. The volume of `0.1 M Ca(OH)_(2)` required to neutralise `0.2 MH_(3)PO_(3)` solution of volume `0.25 dm^(3)` is 500 ml
C. Equivalent weight of sulphate ion is 49
D. Molality of enfluenced by change in temperature

Answer

C, D