Determining the Best Indicator for Neutralization Reaction with pH 6.3 Endpoint

Which indicator would be suitable for a neutralization reaction with an endpoint pH of 6.3?

A. Methyl orange

B. Bromocresol green

C. Phenol red

Answer:

The suitable indicator for a neutralization reaction with an endpoint pH of 6.3 would be:

A. Methyl orange

When conducting a neutralization reaction with an endpoint pH of 6.3, it is essential to choose the right indicator to detect the completion of the reaction accurately. In this case, methyl orange would be the best choice among the given options.

Methyl orange has a pH transition range of 3.1 to 4.4, which falls within the range of the expected pH endpoint of 6.3. While methyl orange is typically used in more acidic conditions, it can also effectively work at a pH of 6.3, making it suitable for this specific neutralization reaction.