Adding an acid to a solution that already has a base in it is called neutralizing the base. Were you able to return the pink (acidic) and green (basic) indicator solutions back to blue (the control ...

Indicators are substances that change colour when they are added to acidic or alkaline solutions. Universal indicator is the indicator most commonly used in the laboratory. If universal indicator ...

1. Dissolve 6.5g KOH (potassium hydroxide) in 1600mL water and add several drops of universal indicator. Place in 2000mL graduated cylinder.