Jump to content
Sign in to follow this  
Mrl4

yellow to red

Recommended Posts

ok so a few days ago, i put some turmeric powder which was a bit old in water. then, i added eau de javel (which is a solution of NaClO and NaCl). the solution turned red. after a while, it became yellow again. could it be some kind of acid-base reaction? because that's what happens when we titrate acid/base solutions: the color of the indicator becomes transparent but then returns to its original color until we reach equivalence. could this be the same? :blink:

Share this post


Link to post
Share on other sites

It's probably something similar. The bleach is alkaline and alkalis turn turmeric reddish. The change to yellow could be because it picks up CO2 from the air abd becomes less alkaline or it could be some more complicated reaction with the hypochlorite.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.