March 29, 2024, 10:28:30 AM
Forum Rules: Read This Before Posting


Topic: Molarity question?  (Read 3505 times)

0 Members and 1 Guest are viewing this topic.

Offline rudiment274

  • Regular Member
  • ***
  • Posts: 9
  • Mole Snacks: +0/-0
Molarity question?
« on: October 09, 2014, 07:06:42 PM »
If 0.900 g sodium carbonate is added to 325 mL of 0.150 M HCl, calclate the molarity of H+ in the solution AFTER the reaction goes to completion?

Reaction: Na2CO3(s)+2HCl(aq)--->2 NaCl(aq)+H2O(l)+CO2(g)

I tried finding moles of Na2CO3 from 0.900 g Na2CO3 then I found moles Na2CO3 from the molarity of 325 mL. Do I subtract the two? And how would I find the molarity of H+?

Offline Hunter2

  • Sr. Member
  • *****
  • Posts: 2155
  • Mole Snacks: +162/-47
  • Gender: Male
  • Vena Lausa moris pax drux bis totis
Re: Molarity question?
« Reply #1 on: October 10, 2014, 01:00:54 AM »
You have aratio 1 Carbonate to 2 Hydrochloric.

Calculate the moles of  Carbonate then you know how much moles you need of Hydrochloric. The difference of this to the given HCl is the result.

Sponsored Links