250+ TOP MCQs on Stoichiometry – VII and Answers

Chemical Process Calculation online quiz focuses on “Stoichiometry- VII”.

1-10. For the given inorganic chemical reaction
HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l)
Molecular weights of the species HCl, NaOH, NaCl and H2O are 36.5, 40, 58.5 and 18 gms respectively.
1. For producing 1 mole of NaCl , how many moles of NaOH are required? (Consider HCl in excess)
a) 1
b) 4
c) 5
d) 6.5
Answer: a
Clarification: 1 mole of NaCl is equivalent to 1 mole of NaOH.

2. For producing 1 mole of NaCl , how many moles of HCl are required? (Consider NaOH in excess)
a) 1
b) 4
c) 5
d) 6.5
Answer: a
Clarification: 1 mole of NaCl is equivalent to 1 mole of HCl.

3. For producing 1 mole of H2O, how many moles of NaOH are required? (Consider HCl in excess)
a) 1
b) 4
c) 5
d) 6.5
Answer: a
Clarification: 1 mole of H2O is equivalent to 1 mole of NaOH.

4. For producing 1 mole of H2O, how many moles of HCl are required? (Consider NaOH in excess)
a) 1
b) 4
c) 5
d) 6.5
Answer: a
Clarification: 1 mole of HCl is equivalent to 1 mole of H2O.

5. If HCl is present in excess and the amount of NaOH is doubled, number of moles of NaCl will be ____________
a) Doubled
b) Half
c) Four times
d) None of the mentioned
Answer: a
Clarification: 1 mole of NaOH is equivalent to 1 mole of NaCl.

6. If HCl is present in excess and the amount of NaOH is doubled, number of moles of H2O will be ____________
a) Doubled
b) Half
c) Four times
d) None of the mentioned