Homework Help: Chemistry

Posted by Jack on Friday, November 30, 2012 at 10:24pm.

An experiment that led to the formation of the new field of organic chemistry involved the synthesis of urea, CN2H4O, by the controlled reaction of ammonia and carbon dioxide.

2 NH3(g) + CO2(g)= CN2H4O(s) + H2O(l)
What is the theoretical yield of urea when 100. g of ammonia is reacted with 100. g of carbon dioxide?

Chemistry - DrBob222, Friday, November 30, 2012 at 10:41pm
This is a limiting reagent problem. I do those this way.
mols NH3 = grams/molar mass
mols C = grams/molar mass

Using the coefficients in the balanced equation convert mols NH3 to mols urea.

Do the same with mols C to urea.

It is quite likely these values will be different which means one of them is not right. The correct value for mols in limiting reagent problems is ALWAYS the smaller value and the reagent responsible for that is the limiting reagent.

Using the smaller value, convert mol urea to g. g = mols x molasr mass. This is the theoretical yield.

Answer this Question

Related Questions

Chemistry - Why was Wohler's synthesis of urea significant to the field of ...
Chemistry-Enthalpies of formation - "Synthesis gas" is a mixture of ...
Organic Chemistry - Benzene is often produced as a by-product during the ...
Chemistry (Inorganic) - Given the two substances Sodium Nitrate (NaNO3) and Urea...
Organic Chemistry - Melting Point Determinations between urea and trans-cinnamic...
chemistry - How many grams of Urea would you have to dissolve in 500ml of H2O in...
organic chemistry - malonic ester with urea gives
science - which organic compounds and cllular orgaelles are involved in protein ...
Organic Chemistry - Student A conducted the acid-catalyzed dehydration of ...
organic chemistry - How would using sodium fluoroacetate instead of sodium ...

For Further Reading

First Name:
School Subject:
Answer: