In Kjeldahl's method for the estimation of N 2, potassium sulphate and copper sulphate are used. On the basis of their functions which of the following statement(s) is/are correct? (i) Potassium sulphate raises the b.pt. and ensures complete reaction. (ii) Copper sulphate acts as catalyst. (iii) Potassium sulphate acts as catalyst and copper sulphate raises the b.pt. (iv) Copper sulphate acts as co-catalyst

Question

In Kjeldahl's method for the estimation of N 2, potassium sulphate and copper sulphate are used. On the basis of their functions which of the following statement(s) is/are correct? (i) Potassium sulphate raises the b.pt. and ensures complete reaction. (ii) Copper sulphate acts as catalyst. (iii) Potassium sulphate acts as catalyst and copper sulphate raises the b.pt. (iv) Copper sulphate acts as co-catalyst (A) Only (iii) is correct (B) (i) and (ii) are correct (C) (ii) and (iv) is correct (D) All are correct

Tardigrade Admin · Accepted Answer

K 2 SO 4 raises b.pt. and CuSO 4 acts as catalyst.

Only (iii) is correct

(i) and (ii) are correct

(ii) and (iv) is correct

All are correct

K2​SO4​ raises b.pt. and CuSO4​ acts as catalyst.

$K_{2} S O_{4}$ raises b.pt. and $C u S O_{4}$ acts as catalyst.