When a mixture of 10.5 g of acetylene (C2H2) and 10.5g of oxygen (O2) is ignited, the resultant combustionreaction produces CO2 and H20.How many grams of C2H2 are present after the reaction is complete??m =SubmitRequest AnswerPart DHow many grams of O2 are present after the reaction is complete??SubmitRequest AnswerPart EHow many grams of CO2 are present after the reaction is complete??bo

Introduction If the mass of each reacting species is given, then the mass of product species can be calculated if one knows the limiting reagent. The limiting reagent is the one that is completely utilized in the reaction.Finding of limiting reagent: The given reaction is as follows: 2C2H2 + 5O2 ---> 4CO2 + 2H2O The number of moles of C2H2 can be calculated as: nC2H2=MassMolar mass =10.5 g26.04 g/mol =0.403 mol The number of moles of O2 can be calculated as: nO2=MassMolar mass =10.5 g32 g/mol =0.328 mol Now the ratio of the number of moles to stoichiometric coefficient can be calculated as: nC2H22=0.4032=0.201nO25=0.3285=0.0656 Since the O2 amount is less, therefore, O2 is limiting reagentCalculation of mass left of C2H2. According to the reaction, 5 moles of O2 react with 2 moles C2H2. Therefore, the moles of C2H2. react with 0.328 mol of O2 can be calculated as: Moles of C2H2=0.328 mol O25 mol O2× 2 mol C2H2 =0.131 mol C2H2 Moles of C2H2 left = 0.201 - 0.131 = 0.07 molesMass of C2H2 left = 0.07 moles x 26 g/mol= 1.82 gCalculation of mass left of O2 Moles of O2 left = 0 molesMass of O2 left = 0 gCalculation of mass left of CO2 According to the reaction, when 5 moles of O2 react, 4 moles of CO2 are formed. Therefore, the moles of CO2 react with 0.328 mol of O2 can be calculated as: Moles of CO2=0.328 mol O25 mol O2× 4 mol CO2 =0.262 mol CO2 Moles of CO2 left = 0.262 molesMass of CO2 left = 0.262 moles x 44 g/mol= 11.53 gConclusion Mass of C2H2 left = 1.82 g Mass of O2 left = 0 g Mass of CO2 left = 11.53 g

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When a mixture of 10.5 g of acetylene (C2H2) and 10.5 g of oxygen (O2) is ignited, the resultant combustion reaction produces CO2 and H2O. How many grams of C,H2 are present after the reaction is complete? Submit Request Answer Part D How many grams of 02 are present after the reaction is complete? ? Submit Request Answer Part E How many grams of CO2 are present after the reaction is complete? bo

When a mixture of 10.5 g of acetylene (C2H2) and 10.5 g of oxygen (O2) is ignited, the resultant combustion reaction produces CO2 and H2O. How many grams of C,H2 are present after the reaction is complete? Submit Request Answer Part D How many grams of 02 are present after the reaction is complete? ? Submit Request Answer Part E How many grams of CO2 are present after the reaction is complete? bo

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

When a mixture of 10.5 g of acetylene (C2H2) and 10.5
g of oxygen (O2) is ignited, the resultant combustion
reaction produces CO2 and H20.
How many grams of C2H2 are present after the reaction is complete?
?
m =
Submit
Request Answer
Part D
How many grams of O2 are present after the reaction is complete?
?
Submit
Request Answer
Part E
How many grams of CO2 are present after the reaction is complete?
?
bo

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