Suppose you wanted to monitor a ph change between 5.3 and 6.3. which indicator would be most appropriate?

d) bromothymol blue

Explanation:

Hello,

For that pH change between 5.3 and 6.3, we need an indicator which changes the color within that rank, in such a way, among the given options, one recalls the bromothymol blue because it turns yellow below about a pH of 6 and starts getting green above 6, therefore, one states that it is the most appropriated indicator.

Best regards.

increased stability in the completion of fluorine's outer shell.