50.0 g sample of brass is dissolved in 1 L dil `H_2SO_4.20mL` of this solution is mixed with KI, and the liberated `I_2` required 20 " mL of " 0.5 M hypo solution for titration calculate the amount of Cu in the alloy.

5g sample of brass was dissolved in one litre dil. H_(2)SO_(4) . 20 ml of this solution were mixed with KI, liberating I_(2) and Cu^(+) and the I_(2) required 20 ml of 0.0327 N hypo solution for complete titration. Calculate the percentage of Cu in the alloy.

A 0.276 g impure sample of copper ore is dissolved and Cu^(2+) is titrated with KI solution. I_(2) liberated required 40 mL of 0.1 M Na_(2) S_(2) O_(3) solution for titration. What is the % of impurities in the ore ?

A 0.276 g impure sample of copper ore is dissolved and Cu^(2+) is titrated with KI solution. I_(2) liberated required 40 mL of 0.1 M Na_(2) S_(2) O_(3) solution for titration. What is the % of impurities in the ore ?

A 0.276 g impure sample of copper ore is dissolved and Cu^(2+) is titrated with KI solution. I_(2) liberated required 40 mL of 0.1 M Na_(2) S_(2) O_(3) solution for titration. What is the % of impurities in the ore ?

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.

10 ml of H_(2)O_(2) solution on treatment with Kl and titration of liberated l_(2) required 20 mL of 1 N hypo solution. What is the normality of H_(2)O_(2) solution ?