Results 1 to 3 of 3

Thread: Theoretical yield

  1. #1
    Member Jonboy's Avatar
    Joined
    May 2007
    From
    South Point
    Posts
    193

    Theoretical yield

    I think that the theoretical yield is the max amount of the products that can be formed. But I don't see how to find it.

    The problem that is stumping me is this:

    Given the equation $\displaystyle Cu_2 + O_2 \to 2Cu + SO_2$, what is the theoretical yield of $\displaystyle SO_2$ if $\displaystyle 8.20 g$ of $\displaystyle 0_2$ are used ?

    Will someone simply and clearly explain how to go about solving this?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    o_O
    o_O is offline
    Primero Espada
    o_O's Avatar
    Joined
    Mar 2008
    From
    Canada
    Posts
    1,410
    Thanks
    1
    You have 8.20 g of $\displaystyle O_{2}$ so we must "convert" it into terms of $\displaystyle SO_{2}$. However, remember that a chemical reaction is representative of each species in moles. So that is where we will start off with:

    $\displaystyle \text{8.20 g } O_{2} \times \frac{\text{1 mol } O_{2} }{\text{32.00 g }O_{2} } = \text{0.25625 mol } O_{2}$

    Now, we know that for every mole of $\displaystyle SO_{2}$ produced, 1 mole of $\displaystyle O_{2}$ was used up. So we have a 1-1 ratio.

    $\displaystyle \text{0.25625 mol } O_{2} \times \frac{\text{1 mol } SO_{2} }{\text{1 mol } O_{2} } = \text{0.25625 mol } SO_{2} \text{ produced}$

    Note how I set up the ratio so that the units "mol $\displaystyle O_{2}$" cancels out. That is pretty much the key in solving stoichiometry questions.

    So you have the moles of $\displaystyle SO_{2}$ produced. Now all that is left is converting it into terms of grams and that should be your theoretical yield.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member Jonboy's Avatar
    Joined
    May 2007
    From
    South Point
    Posts
    193
    that makes complete sense! thank you.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. yield to maturity help
    Posted in the Business Math Forum
    Replies: 1
    Last Post: Feb 26th 2011, 09:14 PM
  2. Investment yield
    Posted in the Algebra Forum
    Replies: 3
    Last Post: Sep 15th 2009, 02:17 PM
  3. Gen Chem: theoretical yield
    Posted in the Advanced Applied Math Forum
    Replies: 1
    Last Post: Oct 1st 2008, 02:02 PM
  4. Last one, effective yield? Not sure
    Posted in the Business Math Forum
    Replies: 8
    Last Post: Apr 2nd 2008, 05:53 PM
  5. Effective yield
    Posted in the Business Math Forum
    Replies: 3
    Last Post: Jan 5th 2007, 01:22 AM

Search Tags


/mathhelpforum @mathhelpforum