1.

By passing electric current,NaClO_3, is converted into NaClO_4, according to the following equation: NaClO_3 + H_2O rarr NaClO_4 + H_2 How many moles of NaClO_4,, will be formed when three Faradays of charge ispassed through NaCIO_3?

Answer»

0.75
3
1.5
1

Solution :`overset(+5)(NaClO_(3))+ H_(2)O to overset(+7)(NaClO_(4))+ H_(2)`
or
`NaClO_(3)-2e^(-) to NaClO_(4)`
This is CLEAR that 2 MOLES of electrons or 2 faradays CHARGE PRODUCE 1 mole of `NaCIO_(4)`. Thus, 3 faradays charge will produce
`= (1)/(2) xx 3 "moles of" NaClO_(4) = 1.5 "moles of" NaClO_(4)`


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