Erichrome T is not used as an indicator for which of the following metals?
Ga
Ca
Cd
Zn
Erichrome black T is a triprotic acid used for indicating Aluminium, Cadmium, Zinc, Calcium, and magnesium.
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50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be : Option: 1 3.75 Option: 2 4.75
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