Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Which indicator is used in fountain experiment and mention the change in colour we observe in this experiment?

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Phenolphthalein is the indicator used in fountain experiment. Due to the basic nature of ammonia, the colourless solution turns pink.