Question

IN AN EXPERIMENT DILUTE SULPHURIC ACID IS RUN INTO A FLASK OF AQUEOUS BARIUM HYDROXIDE UNTIL THE REACTION IS COMPLETE NAME THE TWO PROCESSES THAT HAPPENED IN THIS REACTION

Answer 1

Answer:

The reaction between Ba(OH)2 and dil. H2SO4 is :

Ba(OH) 2 + dil. H2SO4 --> BASO4 (s) + 2H2O (l)

The two processes involved in this reaction are :

• Precipitation reaction ( BaSO4 is insoluble & it precipitates out.
• Displacement reaction ( Clearly it is a displacement reaction as Ba combines with SO4 of H2SO4 & displaces (OH) 2)

Answer 2

In an experiment, an independent variable (the cause) is manipulated and the dependent variable (the effect) is measured;

• any extraneous variables are controlled. An advantage is that experiments should be objective.

• The views and opinions of the researcher should not affect the results of a study.