November 26, 2024, 01:33:20 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Acid Base Reaction  (Read 5642 times)

0 Members and 1 Guest are viewing this topic.

Offline Hailey

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
Acid Base Reaction
« on: April 12, 2007, 06:18:15 PM »
A 1.87 gram sample of Mg reacts with 80mL of a HCl solution whose pH is -.544  What is the pH of the solution after all the Mg has reacted, assume constant volume.

I have no idea how to work this problem.
Logged

Offline Dan

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 4716
  • Mole Snacks: +469/-72
  • Gender: Male
  • Organic Chemist
    • My research
Re: Acid Base Reaction
« Reply #1 on: April 12, 2007, 07:46:31 PM »
what's the balanced equation for this reaction?
Logged
My research: Google Scholar and Researchgate

Offline Hailey

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
Re: Acid Base Reaction
« Reply #2 on: April 12, 2007, 09:42:47 PM »
That is the problem - I don't know
Logged

Offline constant thinker

  • mad scientist
  • Sr. Member
  • *****
  • Posts: 1275
  • Mole Snacks: +85/-45
  • Gender: Male
Re: Acid Base Reaction
« Reply #3 on: April 12, 2007, 09:46:14 PM »
Start with what you have, the reactants.

Mg + HCl --> ?

I'll give you 2 hints as to what the products are.
It's a single replacement reaction.
You will have 2 products.
Logged
"The nine most terrifying words in the English language are, 'I'm from the government and I'm here to help.' " -Ronald Reagan

"I'm for anything that gets you through the night, be it prayer, tranquilizers, or a bottle of Jack Daniels." -Frank Sinatra

Offline Hailey

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
Re: Acid Base Reaction
« Reply #4 on: April 12, 2007, 10:15:24 PM »
I got the single replacement - but, I don't know what to do because I have two molarities on the left side and I don't know how to combine them or whatever to get variables on the right side
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27864
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Acid Base Reaction
« Reply #5 on: April 13, 2007, 02:51:41 AM »
Please write your reaction equation. List both molarities you think you have on the left.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Hailey

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
Re: Acid Base Reaction
« Reply #6 on: April 13, 2007, 07:44:12 AM »
.96Mmg    3.5MHCl
Logged

Offline Dan

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 4716
  • Mole Snacks: +469/-72
  • Gender: Male
  • Organic Chemist
    • My research
Re: Acid Base Reaction
« Reply #7 on: April 13, 2007, 07:53:56 AM »
Start with the balanced equation, do not worry about the molarities yet, just get the chemical equation first.

If you don't know that the equation is, you can do a little research online.

eg. http://www.google.co.uk/search?sourceid=navclient&ie=UTF-8&rls=GGLJ,GGLJ:2006-34,GGLJ:en&q=magnesium+acid+reaction

So, what is the balanced equation.
Logged
My research: Google Scholar and Researchgate
Pages: [1]   Go Up
« previous next »
Sponsored Links