Question

1.2 Strike out the hypotheses that do not allow obtaining a true statement. The acidity of the initial solution in the Erlenmeyer flask INCREASES/DECREASES when an ACID/BASIC solution is added

Answer 1

Answer:

A universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions. Although there are several commercially available universal pH indicators, most are a variation of a formula patented by Yamada in 1933.[1] Details of this patent can be found in Chemical Abstracts.[2] Experiments with Yamada's universal indicator are also described in the Journal of Chemical Education.[3]

Explanation:

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