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

When using universal indicator paper, we get more accurate results by putting only a small spot of the test solution on the paper, and then leaving the colour to develop for about 30 seconds ...

HA → H+ + A- Universal indicator is a wide range indicator and is composed of several different indicators. This allows it to exhibit a wide range of colors at different pH values – visualized here as ...