Question

Which are possible reasons for analyzing the antacid using a back-titration?

		The reaction for the direct titration may be too slow.
		You never do a direct titration of a basic compound.
		The back titration produces less chemical waste.
		The analyte product may have low solubility.

Answer 1

if we use backtitration, this is mainly because we exceeded the amount of titrant used in the FIRST titration

therefore...

The reaction for the direct titration may be too slow. --> false, we are talking about stoichoiemtry, not time of reaction

You never do a direct titration of a basic compound. --> false, you can, but error is greater

The back titration produces less chemical waste. --> true, since we neutralize titrant

The analyte product may have low solubility. --> false,

therefore, themost logical is

The back titration produces less chemical waste.