1.

In order to remove Mg^(2+) and Ca^(+2) from H_(2)O, impure water is treated with sodium tripolyphosephateNa_(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^(+) Selectthe correc statement about treatment of 10 L H_(2)O having 48 ppm of Mg^(+2) and 40 ppm of Ca^(+2)

Answer»

<P>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
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
In order to remove all `mg^(+2)`and `Ca^(+2)` ,7.36 gmof `Na_(5)P_(3)O_(10)` is required
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


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