. Carbamide (CH4N2O), can be synthesized by the reaction of ammonia (NH3) with carbon dioxide (CO2):

2 NH3 (aq) + CO2 (aq) CH4N2O (aq) + H2O (l)

An industrial synthesis of urea obtains 87.5 kg of urea upon reaction of 68.2 kg of ammonia

with 105 kg of carbon dioxide. Determine the limiting reactant, theoretical yield of urea and percent yeild for the reaction

Explanation:

First we convert the given masses of reactants to moles, using their respective molar masses:

2.39 kmol of CO₂ would react completely with (2.39 * 2) 4.78 kmol of NH₃. There are not as many NH₃ kmoles so NH₃ is the limiting reactant.

We calculate how much urea would form with a 100% yield, using the moles of limiting reactant:

We convert that amount to kg:

Finally we calculate the percent yield:

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne