The best indicator for titrating HCl against `NH_(4)OH` is :

Assign for the following : (i) An aqueous of NaCI is neutral (ii) NH_(3) is a Lewis as well as Bronsted base. (iii) Phenolphthalein is not a suitable indicator for titration between HCI against NH_(4)OH. (iv) pH value of an aqueous 10^(-2) M acetic acid solution is not 2.

The best indicator for titrating 0.1 Na_2CO_3 against 0.1 N HCl is

The best indicator for titrating 0.1 N Na_2CO_3 against 0.1 N HCl is

Name of the suitable indicators which could be used in the following titrations : HCl against NH_4OH

Name of the suitable indicators which could be used in the following titrations : CH_3COOH against NH_4OH