Question

A student used a pipette to add 25.0 cm3 of sodium hydroxide of unknown concentration to a conical flask.
The student carried out a titration to find out the volume of 0.100 mol / dm3 sulfuric acid needed to neutralise the sodium hydroxide.
Describe how the student would complete the titration.
You should name a suitable indicator and give the colour change that would be seen.

Answer 1

Answer:

metyl orange

Explanation:

it gives yellow color with the acid

then it was neutralize with additional of base

hence the end point of rxn shows pale pink color

Answer 2

Answer:

adds indicator, eg phenolpthalein / methyl orange / litmus added to the sodium hydroxide (in the conical flask)  

(adds the acid from a) burette  

with swirling or dropwise towards the end point or until the indicator just changes colour

until the indicator changes from pink to colourless (for phenolphthalein) or yellow to red (for methyl orange) or blue to red (for litmus)