This set of Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Stoichiometry-II”.
1. In the reaction a NH3 + b O2 → c NO2 + d H2O, what is the balanced value of a (the coefficient for NH3)?
a) 2
b) 4
c) 6
d) 8
View Answer
Explanation: The reaction is balanced by setting a = 4 to ensure both nitrogen and hydrogen atoms are accounted for.
2. For the reaction a NH3 + b O2 → c NO2 + d H2O, what is the balanced value of b (the coefficient for O2)?
a) 1.5
b) 2.5
c) 3.5
d) 4.5
View Answer
Explanation: To balance oxygen atoms, we find that b = 3.5 provides the correct ratio.
3. In the reaction a NH3 + b O2 → c NO2 + d H2O, what is the balanced value of c (the coefficient for NO2)?
a) 2
b) 4
c) 6
d) 8
View Answer
Explanation: Balancing nitrogen atoms requires that c = 4 to match the number of nitrogen atoms on both sides of the equation.
4. In the balanced reaction a NH3 + b O2 → c NO2 + d H2O, what is the balanced value of d (the coefficient for H2O)?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Balancing hydrogen atoms shows that d = 6 to provide an equal number of hydrogen atoms on both sides of the equation.
5. If 1 kg of Octane is oxidised with O2, then how much kg of O2 is required?
a) 200
b) 400
c) 600
d) 800
View Answer
Explanation: 1 mole of Octane = 12.5 moles of O2.
6. If 1 kg of butane is burned with O2, then how much kg of CO2 will produce by 40 kg of butane?
a) 111.38
b) 121.38
c) 131.38
d) 141.38
View Answer
Explanation: 1 mole of butane = 4 moles of CO2.
7. In the combustion reaction C6H14 + 19/2 O2 → 6 CO2 + 7 H2O, if the required amount of CO2 is 440 kg/hour, how much C6H14 should be burned per hour?
a) 123.33
b) 143.33
c) 163.33
d) 183.33
View Answer
Explanation: 1 mole of C6H14 produces 6 moles of CO2.
8. In the reaction C6H14 + 19/2 O2 → 6 CO2 + 7 H2O, if 72 kg of H2O is required, how much C6H14 should be burned per hour?
a) 49.14
b) 39.14
c) 39.14
d) 29.14
View Answer
Explanation: 1 mole of C6H14 produces 7 moles of H2O.
9. In the reaction N2 + 3 H2 → 2 NH3, if 34 grams of NH3 is to be produced, how many moles of N2 are required?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: 1 mole of N2 produces 2 moles of NH3.
10. In the reaction N2 + 3 H2 → 2 NH3, how many grams of H2 are required to produce 34 grams of NH3?
a) 3
b) 6
c) 9
d) 12
View Answer
Explanation: 3 moles of H2 produce 2 moles of NH3.
Sanfoundry Global Education & Learning Series – Chemical Process Calculation.
To practice all areas of Chemical Process Calculation, here is complete set of 1000+ Multiple Choice Questions and Answers.
