GC1 Chemical Reactions and Stoichiometry 20Oct21

These are normally located on the right side of a chemical equation.

• compounds

• elements

• products

• reactants

The following is a chemical reaction except

• burning of paper

• ripening of banana

• rusting of nails

• shredding of paper

If a chemist compute the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the

• theoretical yield
• mole ratio
• actual yield
• percentage yield

what comes first in the following option

• balancing the chemical equation

• calculating the number of moles

• calculating the mass

• writing the word equation

The type of reaction when two compounds react to form two other compounds

• combination

• decomposition

• single replacement

• double replacement

The molar mass of hydrogen peroxide, H₂O₂

• 18 grams

• 18 g/mole

• 34 g/mole

• 34 moles

2 KClO₃ → 2 KCl + 3 O₂
How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

• 6.7 mol
• 1.0 mol
• 10.1 mol
• 4.5 mol

The actual yield may be greater than the theoretical yield.

• True

• False

KNO₃ --> KNO₂ + O₂
What coefficients are needed to balance the reaction?

• 2, 2, 1
• 2, 3, 2
• 1, 2, 2
• 1, 3, 1

What should be the coefficient of H₂ in the equation

N₂ + H_{2 -------->} NH₃

• 1

• 2

• 3

• 4