Summer II Chemistry Final Review E

What are the coefficients that will balance the skeleton equation below?

____AlCl3 + ____NaOH --> ____Al(OH)3 + ____NaCl

• 1,3,1,3

• 3,1,3,1

• 1,1,1,3

• 1,3,3,1

What are the coefficients that will balance the skeleton equation below?

____N₂ + ____H₂ --> ____NH₃

• 1,1,2

• 1,3,3

• 3,1,2

• 1,3,2

Chemical equations must be balanced to satisfy ____.

• the law of definite proportions

• the law of multiple proportions

• the law of conservation of mass

• Avogadro’s principle

In every balanced chemical equation, each side of the equation has the same number of ____.

• atoms of each element

• molecules

• moles

• coefficients

In a combustion reaction, one of the reactants is ____.

• hydrogen

• nitrogen

• oxygen

• a metal

In a double-replacement reaction, the ____.

• products are always molecular

• reactants are two ionic compounds

• reactants are two elements

• products are a new element and a new compound

Which of the following statements is true about single-replacement reactions?

• They are restricted to metals

• They involve a single product.

• Two reactants produce two products

• Any metal replaces any other metal.

The reaction 2Fe + 3Cl₂ --> 2FeCl₃ is an example of which type of reaction?

• combustion reaction

• single-replacement reaction

• combination reaction

• decomposition reaction

The equation Mg(s) + 2HCl(aq) --> MgCl₂(aq) + H₂ (g) is an example of which type of reaction?

• combination reaction

• single-replacement reaction

• decomposition reaction

• double-replacement reaction

The equation H₃PO₄ + 3KOH --> K₃PO₄ + 3H₂0

is an example of which type of reaction?

• combination reaction

• single-replacement reaction

• decomposition reaction

• double-replacement reaction