A few drops of blue litmus are added to a solution containing Al^3+, which is then made slightly alkaline with NH4OH. Th

Question

A few drops of blue litmus are added to a solution containing Al^3+, which is then made slightly alkaline with NH4OH. The observation that indicates Al^3+ (lake test) is

Accepted Answer

a blue floating mass of Al(OH)3 adsorbing the dye, leaving a colourless solution

Answer

a green precipitate that settles

Answer

a deep blue clear solution

Answer

a red solution with no precipitate

A few drops of blue litmus are added to a solution containing $Al X^{3 +}$ , which is then made slightly alkaline with $NH X_{4} OH$ . The observation that indicates $Al X^{3 +}$ (lake test) is

Answer: A

More questions on Group III cations (Fe, Al, Cr)

A few drops of blue litmus are added to a solution containing AlX3+, which is then made slightly alkaline with NHX4​OH. The observation that indicates AlX3+ (lake test) is

Answer: A

More questions on Group III cations (Fe, Al, Cr)

A few drops of blue litmus are added to a solution containing $Al X^{3 +}$ , which is then made slightly alkaline with $NH X_{4} OH$ . The observation that indicates $Al X^{3 +}$ (lake test) is