Virtual Titration — Acid into Base

Simulation

All apparatus stays on the left

What is in the flask?

What is in the burette?

Volume in flaskmL

Concentration in flaskM = mol L⁻¹

Concentration in buretteM = mol L⁻¹

Solution loaded in burettemL

Indicator

Drop speed

Show equivalence

Virtual chemistry laboratory

The burette contains a clear solution; the indicator colour belongs to the flask.

100

100 mL burette
clear solution

Base + indicator

Erlenmeyer flask • solution being tested

Acid added0.00 mL

Current pH—

Equivalence—

Burette left—

StatusReady

Base is in the flask. The indicator is ready.

Ready to beginClick Play for a continuous drop-by-drop experiment or Add one drop to control the endpoint carefully.

1 : 1

Reaction—

Initial flask moles—

Required burette moles—

Equivalence volume—

Current burette moles—

Indicator—

Choose the flask solution and burette solution to see the calculation.

pH vs acid added

pointsequivalenceendpoint

Updated drop-by-drop

#	Added from burette (mL)	pH	Colour

For the default acid-in-flask / base-in-burette setup, phenolphthalein starts colorless and becomes pink in the basic region near the endpoint.