In order to remove `Mg^(2+)` and `Ca^(+2)` from `H_(2)O`, impure water is treated with sodium tripolyphosephate `Na_(5)P_(3)O_(10)+Mg^(+2) rarr Na_(3)MgP_(3)O_(10)+2Na^(+)`
`Na_(3)MgP_(3)O_(10)+Ca^(+2)rarr NaCaMgP_(3)O_(10)+2Na^(+)`
Select the correc statement about treatment of 10 L `H_(2)O` having 48 ppm of `Mg^(+2)` and 40 ppm of `Ca^(+2)`

Options

A. In order of remove all `Mg^(+2)` from `H_(2)O` at least 7.36 gm of `Na_(5)P_(3)O_(10)` is required
B. In order of remove all `Mg^(+2)` from `H_(2)O` at least 3.68 gm of `Na_(5)P_(3)O_(10)` is required
C. In order to remove all `mg^(+2)` and `Ca^(+2)` ,7.36 gm of `Na_(5)P_(3)O_(10)` is required
D. In order to remove all `Mg^(+2)` and `Ca^(+2)` , at least 11.04 gm of `Na_(5)P_(3)O_(10)` is required

Answer

A, C