Ask Experts Questions for FREE Help !
Ask
    chemistry girl's Avatar
    chemistry girl Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 16, 2009, 12:13 AM
    percent yield
    A mass of 8.15g C^2H^4(g) reacts with excess oxygen. If 16.2g CO^2(g( is collected, what is the percent yield?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Nov 16, 2009, 01:24 AM

    1. Write down the equation for the reaction taking place.



    2. Find the number of moles of C2H4 in the 8.15 g

    3. Find the expected amount of moles of CO2 to be produced.

    4. Find the mass of that number of moles.

    5. Use the formula

    EDIT: Missed something :o
    pramod awasthi's Avatar
    pramod awasthi Posts: 29, Reputation: -1
    New Member
    		  
    #3

    Nov 16, 2009, 07:40 AM

    Ok I will try to give ans
    first write down alance combustin reaction for given compoud
    C2H4 +3O2==========> 2CO2+2H2O
    28 gm 96 gm 88gm 32gm


    28 gm C2H4 produce 88gm CO2
    1gm produce 88/28 gm CO2
    8.15 gm will produce 88*8.15/28 gm co2
    whch is equal to 25.61 gm
    but according to your experiment only 16.2 gm found so it mean uallow to scape some co2 from your cane
    wel percentage yield is 16.2gm*100/25.61=63.26% I think
    I am right please reply me
    pramod
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Percent changes [ 2 Answers ]

Can anybody help me out with this? On December 31, 1995, there were an estimated 411 prison inmates per 100,000 U.S. residents. This number rose to an estimated 476 inmates per 100,000 U.S. residents by December 31, 2002. a.What percentage of the U.S. population were prison inmates at the...

Percy Motors has a target capital structure of 40 percent debt and 60 percent common [ 2 Answers ]

Percy Motors has a target capital structure of 40 percent debt and 60 percent common equity, with no preferred stock. The yield to maturity on the company's outstanding bonds is 9 percent, and its tax rate is 40 percent. Percy's CFO estimates that the company's WACC is 9.96 percent. What is Percy's...

Percent proportion [ 2 Answers ]

OK I don't get this one question on my homework and I do not understand it can you help me with this please The question is:90 is 60% of what number

Percent change [ 1 Answers ]

I did the calculations for common-size comparison for years 2000 to 2001. To do the % change, do I use the actual numbers from the balance sheet or the percents from the common-size comparisons? THX!:confused:

View more questions Search