Jump to content

Polyprotic Acids

anthropos
in Homework Help

Featured Replies

Yo, I am a 17 year old student and one day I saw this question in my textbook.

 

"Acids are added to cola drinks to lower the pH to about 2.5 to impart tartness. Show that a cola that contains from 0.057 to 0.084% of 75% phosphoric acid (H3PO4), by mass, meets this pH requirement. "

 

Can somebody explain the "0.057 to 0.084% of 75% phosphoric acid (H3PO4), by mass"? I don't quite get it.

okay, say you have 1 gram of of 75% phosphoric acid by mass. that means that 0.75grams is pure H3PO4, the rest is water.

 

the 0.057 to 0.084% refers to the amount of 75% phosphoric acid in the drink. compared to the mass of the drink as a whole.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

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.

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.