`100ml` of `0.05M CuSO_(4)("aq")` solution was electrolysed using inert electrodes by passing current till `pH` of the resulting solution was 2. The solution after electrolysis was neutralized and then treated with excess of `KI` and formed `I_(2)` titrated with `0.04M Na_(2)S_(2)O_(3)`. Calculate the required vol. in `ml` of `Na_(2)S_(2)O_(3)`

100mL of 0.5 M CuCO_4 (aq) solution was electrolysed using inert electrodes by passing current till the pH of the resulting solution was 2. The solution after electrolysis was neutralized and then treated with excess KI and formed I_2 titrated with 0.04 M Na_2SO_2O_3 Calculate the required volume (in mL) of Na_2SO_2O_3 :

100mL of 0.5 M CuCO_4 (aq) solution was electrolysed using inert electrodes by passing current till the pH of the resulting solution was 2. The solution after electrolysis was Calculate the required volume (in mL) of Na_2SO_2O_3 :

100mL CuSO_(4)(aq) was electrolyzed using inert electrodes by passing 0.965A till the pH of the resulting solution was 1. The solution after electrolysis was neutralized, treated with excess KI and titrated with 0.04M Na_(2)S_(2)O_(3) . Volume of Na_(2)S_(2)O_(3) required was 35mL . Assuming no volume change during electrolysis, calculate: (a) duration of electrolysis if current efficiency is 80% (b) initial concentration (M) of CuSO_(4) .

100mL CuSO_(4)(aq) was electrolyzed using inert electrodes by passing 0.965A till the pH of the resulting solution was 1. The solution after electrollysis was neutralized, treated with excess KI and titrated with 0.04M Na_(2)S_(2)O_(3) . Volume of Na_(2)S_(2)O_(3) required was 35mL . Assuming no volume change during electrolysis, calculate: (a) duration of electrolysis if current efficiency is 80% (b) initial concentration (M) of CuSO_(4) .

100mL CuSO_(4)(aq) was electrolyzed using inert electrodes by passing 0.965A till the pH of the resulting solution was 1. The solution after electrollysis was neutralized, treated with excess KI and titrated with 0.04M Na_(2)S_(2)O_(3) . Volume of Na_(2)S_(2)O_(3) required was 35mL . Assuming no volume change during electrolysis, calculate: (a) duration of electrolysis if current efficiency is 80% (b) initial concentration (M) of CuSO_(4) .

100mL CuSO_(4)(aq) was electrolyzed using inert electrodes by passing 0.965A till the pH of the resulting solution was 1. The solution after electrolysis was neutralized, treated with excess KI and titrated with 0.04M Na_(2)S_(2)O_(3) . Volume of Na_(2)S_(2)O_(3) required was 35mL . Assuming no volume change during electrolysis, calculate: duration of electrolysis if current efficiency is 80%

Density of a 3 molar aqueous solution of Na_(2)S_(2)O_(3) is 1.482gm//ml . Calculate mole fracrtion of Na_(2)S_(2)O_(3) in solution.

A solution of 0.2 g of a compound containing Cu^(2+) and C_(2)O_(4)^(2-) ions on titration with 0.02M KMnO_(4) in presence of H_(2)SO_(4) consumes 22.6mL oxidant. The resulting solution is neutralized by Na_(2)CO_(3) , acidified with dilute CH_(3)COOH and titrated with excess of KI . The liberated I_(2) required 11.3 mL "of" 0.05M Na_(2)S_(2)O_(3) for complete reduction. Find out mole ratio of Cu^(2+) and C_(2)O_(4)^(2+) in compound.

A solution of 0.2 g of a compound containing Cu^(2+) and C_(2)O_(4)^(2-) ions on titration with 0.02M KMnO_(4) in presence of H_(2)SO_(4) consumes 22.6mL oxidant. The resulting solution is neutralized by Na_(2)CO_(3) , acidified with dilute CH_(3)COOH and titrated with excess of KI . The liberated I_(2) required 11.3 mL "of" 0.05M Na_(2)S_(2)O_(3) for complete reduction. Find out mole ratio of Cu^(2+) and C_(2)O_(4)^(2+) in compound.

A 1.10 g sample of copper ore is dissolved and the Cu^(2+) of is treated with excess KI . The liberated I_(2) requires 12.12 mL of 0.10M Na_(2)S_(2)O_(3) solution for titration. Find the % copper by mass in ore.