0.4 g of a mixutre containing sodium oxalate `(Na_2C_2O_4)` and potassium oxalate requires 50 " mL of " `(M)/(60)K_2Cr_2O_7` solution in acidic medium for complete reaction. Calculate the percentage composition of the mixture.

0.4 g of a mixutre containing sodium oxalate `(Na_2C_2O_4)` and potass

1.	0.4 g of a mixutre containing sodium oxalate `(Na_2C_2O_4)` and potassium oxalate requires 50 " mL of " `(M)/(60)K_2Cr_2O_7` solution in acidic medium for complete reaction. Calculate the percentage composition of the mixture.
Answer» `Ew(Na_2C_2O_4)=(2xx23+2xx12+4xx16)/(2)=(134)/(2)=67g` `Ew(K_2C_2O_4)=(2xx39+2xx12+4xx16)/(2)=(166)/(2)=83g` Let x g of `Na_2C_2O_4` and `(0.4-x)g of K_2Cr_2O_7` `((x)/(67)+(0.4-x)/(83))xx10^(3)=50xx(1)/(60)xx6` (n-factor) `83x+67(0.4-x)=(5xx67xx83)/(10^(3))` `16x=27.8-67xx0.4` `=27.8-26.8=1.0` `x=(1)/(16)=0.06g` `% of Na_2C_2O_4=(0.06xx100)/(0.4)=15.6%` `% of K_2C_2O_4=100-15.6=84.4%`

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0.4 g of a mixutre containing sodium oxalate `(Na_2C_2O_4)` and potassium oxalate requires 50 " mL of " `(M)/(60)K_2Cr_2O_7` solution in acidic medium for complete reaction. Calculate the percentage composition of the mixture.

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