Chemical Forums

Please login or register.

Login with username, password and session length

Sponsored links

Pages: [1]   Go Down

Author Topic: Gas stoichiometry Question  (Read 929 times)

0 Members and 1 Guest are viewing this topic.

edsmart

  • New Member
  • **
  • Mole Snacks: +0/-0
  • Offline Offline
  • Posts: 6
Gas stoichiometry Question
« on: September 16, 2018, 05:08:54 AM »

Consider the following reaction:

CH4(g) + 2O2(g)

 CO2(g) + 2H2O(l)

What is the final volume if 10 L of methane (CH4) reacts completely with 20 L of oxygen?

So for this question, I got 30 liters, but the question said it was 10 liters. Why is liquid not counted? When is liquid counted? How about solid? Does this only apply to volume?
Logged

sjb

  • Global Moderator
  • Sr. Member
  • ***
  • Mole Snacks: +211/-41
  • Offline Offline
  • Gender: Male
  • Posts: 3349
Re: Gas stoichiometry Question
« Reply #1 on: September 16, 2018, 05:14:36 AM »

What is the volume of one mole of water at STP, and of one mole of carbon dioxide, also at STP?
Logged

edsmart

  • New Member
  • **
  • Mole Snacks: +0/-0
  • Offline Offline
  • Posts: 6
Re: Gas stoichiometry Question
« Reply #2 on: September 16, 2018, 05:44:09 AM »

22.4 L for water and 22.4 L for carbon dioxide, they are the same?
Logged

sjb

  • Global Moderator
  • Sr. Member
  • ***
  • Mole Snacks: +211/-41
  • Offline Offline
  • Gender: Male
  • Posts: 3349
Re: Gas stoichiometry Question
« Reply #3 on: September 16, 2018, 05:50:15 AM »

Not quite, what is the definition of STP?
Logged

edsmart

  • New Member
  • **
  • Mole Snacks: +0/-0
  • Offline Offline
  • Posts: 6
Re: Gas stoichiometry Question
« Reply #4 on: September 16, 2018, 05:52:02 AM »

standard temperature and pressure, so 1atm and 273.15 K. I am not sure where to go
Logged

chenbeier

  • Full Member
  • ****
  • Mole Snacks: +34/-9
  • Offline Offline
  • Gender: Male
  • Posts: 307
Re: Gas stoichiometry Question
« Reply #5 on: September 16, 2018, 06:31:39 AM »

And in which form is water  and Carbondioxide at STP
Logged

edsmart

  • New Member
  • **
  • Mole Snacks: +0/-0
  • Offline Offline
  • Posts: 6
Re: Gas stoichiometry Question
« Reply #6 on: September 16, 2018, 07:05:40 AM »

liquid and gas? I did the mass density for water to find the volume, i got like 18 ml.
Logged

chenbeier

  • Full Member
  • ****
  • Mole Snacks: +34/-9
  • Offline Offline
  • Gender: Male
  • Posts: 307
Re: Gas stoichiometry Question
« Reply #7 on: September 16, 2018, 07:12:57 AM »

The volume what is counted for gas reaction is only the one of gaseous compounds. Liquid and solid substaces  are not counted.
Logged

edsmart

  • New Member
  • **
  • Mole Snacks: +0/-0
  • Offline Offline
  • Posts: 6
Re: Gas stoichiometry Question
« Reply #8 on: September 16, 2018, 07:15:05 AM »

Thank you, is it because gas is only applicable to ideal gas law?
Logged

Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Mole Snacks: +1613/-394
  • Offline Offline
  • Gender: Male
  • Posts: 24635
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Gas stoichiometry Question
« Reply #9 on: September 16, 2018, 08:59:26 AM »

Thank you, is it because gas is only applicable to ideal gas law?

No idea what you mean, but you can apply ideal gas law only to gases, not to liquids nor solids.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info, pH-meter.info, PZWT_s1

edsmart

  • New Member
  • **
  • Mole Snacks: +0/-0
  • Offline Offline
  • Posts: 6
Re: Gas stoichiometry Question
« Reply #10 on: September 16, 2018, 09:04:04 AM »

ok thanks
Logged
Pages: [1]   Go Up
 

Mitch Andre Garcia's Chemical Forums 2003-Present.

Page created in 0.07 seconds with 24 queries.