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The theoretical yield is always based on the amount of the ______ reactant.

A. initial

B. final

C. limiting ✓

D. excess

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Jun 23, 2026

When 6.5 g of Zn (0.1 mol) reacts with 7.3 g of HCl (0.2 mol), the theoretical yield of ZnCl₂ is (Zn + 2HCl → ZnCl₂; ZnCl₂=136 g/mol):

A. 13.6 g ✓

B. 6.5 g

C. 7.3 g

D. 27.2 g

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Jun 23, 2026

For C₃H₈ + 5O₂ → 3CO₂ + 4H₂O, the theoretical yield of CO₂ from 0.5 moles of C₃H₈ is:

A. 1.5 moles ✓

B. 3 moles

C. 0.5 moles

D. 5 moles

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

The theoretical yield of silver (Ag) from the decomposition of 17 g of AgNO₃ is (2AgNO₃ → 2Ag + 2NO₂ + O₂; Ag=108, AgNO₃=170):

A. 1.08 g

B. 10.8 g ✓

C. 21.6 g

D. 17 g

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

Given 2Al + 3Br₂ → 2AlBr₃, the theoretical yield of AlBr₃ from 3 moles of Br₂ is:

A. 1 mole

B. 2 moles ✓

C. 3 moles

D. 4 moles

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Jun 23, 2026

The reaction of 10 g of H₂ (5 mol) with 32 g of O₂ (1 mol) produces H₂O. The theoretical yield of water is (2H₂ + O₂ → 2H₂O):

A. 18 g

B. 36 g ✓

C. 90 g

D. 10 g

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

For the reaction 2KClO₃ → 2KCl + 3O₂, the theoretical yield of O₂ from 1 mole of KClO₃ is:

A. 1 mole

B. 1.5 moles ✓

C. 2 moles

D. 3 moles

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

The complete combustion of 32 g of methane (CH₄=16 g/mol) produces a theoretical yield of ___ grams of CO₂ (CO₂=44 g/mol).

A. 32 g

B. 44 g

C. 88 g ✓

D. 16 g

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

The theoretical yield of H₂ gas at STP from the reaction of 1 mole of Zn with excess HCl (Zn + 2HCl → ZnCl₂ + H₂) is:

A. 11.2 dm³

B. 22.4 dm³ ✓

C. 2 dm³

D. 1 dm³

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

Given 2Na + Cl₂ → 2NaCl, the theoretical yield of NaCl from 46 g of Na is (Na=23 g/mol; NaCl=58.5 g/mol):

A. 58.5 g

B. 117 g ✓

C. 46 g

D. 23 g

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

The reaction of 1 mole of CH₄ with excess O₂ (CH₄ + 2O₂ → CO₂ + 2H₂O) produces a theoretical yield of ___ grams of H₂O. (H₂O=18 g/mol)

A. 18 g

B. 36 g ✓

C. 9 g

D. 2 g

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

For CaCO₃ → CaO + CO₂, the theoretical yield of CaO from 50 g of CaCO₃ is (CaCO₃=100 g/mol; CaO=56 g/mol):

A. 56 g

B. 50 g

C. 28 g ✓

D. 100 g

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

The theoretical yield of MgO from the reaction of 24 g of Mg (Mg=24 g/mol) is (2Mg + O₂ → 2MgO; MgO=40 g/mol):

A. 24 g

B. 32 g

C. 40 g ✓

D. 80 g

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

Given N₂ + 3H₂ → 2NH₃, the theoretical yield of NH₃ from 3 moles of H₂ is:

A. 1 mole

B. 2 moles ✓

C. 3 moles

D. 4 moles

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

For the reaction C + O₂ → CO₂, the theoretical yield of CO₂ from 12 g of Carbon (C=12 g/mol) is:

A. 12 g

B. 22 g

C. 32 g

D. 44 g ✓

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

In the reaction 2H₂ + O₂ → 2H₂O, the theoretical yield of water from 2 moles of H₂ is:

A. 1 mole

B. 2 moles ✓

C. 4 moles

D. 0.5 moles

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Jun 23, 2026

The amount of product specified in the calculation is the:

A. Actual yield

B. Theoretical yield ✓

C. Mole ratio

D. Excess amount

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Jun 23, 2026

The percent yield can be thought of as the ratio of what you to what you , multiplied by 100.

A. should get, actually got

B. actually got, should get ✓

C. start with, end with

D. end with, start with

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nmdcat.online Chemistry NMDCAT MCQs

Jun 23, 2026

A low percent yield might prompt a chemist to investigate for:

A. A better balanced equation

B. A faster reaction pathway

C. Possible side reactions or purification issues ✓

D. A different catalyst

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Jun 23, 2026

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