HA → H+ + A- Universal indicator is a wide range indicator ... Bring the solution back to its original uniform color and repeat the demonstration again. Use a weak acid such as acetic acid and a weak ...

Repeat step 1 with ethanoic acid into a separate test-tube. Add 5 drops of universal indicator ... especially any colour changes to the indicator. Using the disposable pipette/dropper, collect ...

Set out 1 set of labeled cups, 1 unlabeled cup, universal indicator ... the now-acidic solution retains its final color change. You may also notice that the reaction mixture feels warm. As with many ...