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When 0.36 gm of iron pyrite (FeS(2)) was...

When 0.36 gm of iron pyrite `(FeS_(2))` was heated strongly in air following reaction takes place
`FeS_(2)(s)+O_(2)(g) to Fe_(2)O_(3)(s)+SO_(2)(g)`
The `SO_(2) (g)` produced was titrated with acidified ` K_(2)Cr_(2)O_(7)` solution. Calculate the volume in mL of 1 M `K_(2)Cr_(2)O_(7)` solution used in the redox titration. [Fe-56,S-32]

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