Jump to content

Iron in Spinach IA


Recommended Posts

I am currently in the experimental stage of my chemistry IA (sl) and it is a redox titration where the indicator is KMnO4 (0.01 M), the acid H2SO4 (1 M), and my independent variable is different boiling times of spinach. I am trying to test how much iron is in the spinach water after different periods of boiling, but am having trouble determining when the endpoint is. Every time the solution turns pink, it goes back to clear around one to two minutes later. Does anyone have any advice as to how I can determine the endpoint? Or maybe I should change my indicator to a more potent solution? Any help will be very much appreciated!

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...