Exam Review Two

Consider the following unbalanced oxidation-reduction reaction:

Fe²⁺ + Cl₂ --> Fe³⁺ + Cl^-

In the balanced equation, the coefficient of Cl^- is

• 1

• 3

• 2

• 4

• none of these

What volume does 31.5g of N₂ occupy at STP?

• 50.3L

• 1.4145L

• 25.1L

• 39.4L

• none of these

Gaseous C₂H₄ reacts with O₂, what volume of oxygen gas at STP is needed to react with 6.01mol of C₂H₄?

• 18.0L

• 44.9L

• 4.04E2L

• 1.35E2L

• not enough info

How many grams of water will be formed when 32.0g H₂ is mixed with 84.0g of O₂ and allowed to react to form water?

• 94.6g

• 286g

• 47.3g

• 23.6g

• 144g

Which of the following processes decreases the atomic number by one?

• gamma-ray production

• electron capture

• beta-particle production

• positron production

• at least two of the above processes

Which of the following pairs is incorrect?

• C₂H₄

  _ethane

• C₅H₁₂

  _pentane

• C₆H₁₄

  _hexane

• C₇H₁₆

  _heptane

• C₈H₁₈

  _octane

Match the following

• alkenes

• hydrocarbons with sigma-pi-pi bonds

• alkynes

• hydrocarbons with hydroxide groups

• alcohols

• hydrocarbons with sigma bonds

• alkanes

• hydrocarbons with sigma-pi bonds

Which ion is planar?

• NH₄⁺

• CO₃^2-

• SO₃^2-

• ClO₃^2-

• all species are planar

What type of structure does the XeOF₂ molecule have?

• pyramidal

• tetrahedral

• T-shaped

• trigonal planar

• octahedral

Which of the following groups contain no ionic compounds?

• HCN

  NO₂

  Ca(NO₃)₂

• PCl₃

  LiBr

  Zn(OH)₂

• KOH

  CCl₄

  SF₄

• NaH

  CaF₂

  NaNH₂

• CH₂O

  H₂S

  NH₃