Patricia Rothen
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Chemistry HL Quiz on Chem P1, created by Patricia Rothen on 14/04/2013.

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Patricia Rothen
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Chem P1

Question 1 of 22

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1. On analysis, a compound with molar mass 60 gmol-1 was found to contain 12g of carbon, 2g of hydrogen and 16 g of oxygen. What is the molecular formula for the compound?

Select one of the following:

  • A. CH2O

  • B. CH4O

  • C. C2H4O

  • D. C2H4O2

Explanation

Question 2 of 22

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2. 300 cm3 of water are added to a solution of 200 cm3 of 0.5 moldm-3 sodium chloride. What is the concentration of sodium chloride in the new solution?

Select one of the following:

  • A. 0.05 moldm-3

  • B. 0.1 moldm-3

  • C. 0.2 moldm-3

  • D. 0.3 moldm-3

Explanation

Question 3 of 22

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3. Which statement about the species 63Cu2+ and 65Cu+ is correct?

Select one of the following:

  • A. Both species have the same number of protons.

  • B. Both species have the same number of electrons.

  • C. Both species have the same number of neutrons.

  • D. Both species have the same electron arrangement.

Explanation

Question 4 of 22

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4. Which statements about the periodic table are correct?
I. The elements Mg, Ca and Sr have similar chemical properties.
II. Elements in the same period have the same number of main energy levels.
III. The oxides of Na, Mg and P are basic.

Select one of the following:

  • A. I and II only.

  • B. I and III only.

  • C. II and III only.

  • D. I, II, and III

Explanation

Question 5 of 22

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5. In which complexes does iron have an oxidation number of +3?
I. [Fe(H2O)6]3+
II. [Fe(H2O)5(CN)]2+
III. [Fe(CN)6]3-

Select one of the following:

  • A. I and II only.

  • B. I and III only.

  • C. II and III only.

  • D. I, II and III.

Explanation

Question 6 of 22

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6. Which species contain a dative covalent bond?
I. HCHO
II. CO
III. H3O+

Select one of the following:

  • A. I and II only.

  • B. I and III only.

  • C. II and III only.

  • D. I, II and III

Explanation

Question 7 of 22

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7. Which substance is made up of a lattice of positive ions and free-moving electrons?

Select one of the following:

  • A. Graphite

  • B. Sodium chloride

  • C. Sulfur

  • D. Sodium

Explanation

Question 8 of 22

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8. Which species have delocalized electrons?
I. (CO3)2-
II. O3
III. HCOOH

Select one of the following:

  • A. I and II only

  • B. I and III only

  • C. II and III only

  • D. I, II and III

Explanation

Question 9 of 22

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9. Identical pieces of magnesium are added to two beakers, A and B, containing hydrochloric acid. Both acids have the same initial temperature but their volumes and concentrations differ.
A - 100cm3 of 1.0moldm-3 HCl
B - 200cm3 of 0.50moldm-3 HCl
Which statement is correct?

Select one of the following:

  • A. The maximum temperature in A will be higher than in B.

  • B. The maximum temperature in A and B will be equal.

  • C. It is not possible to predict whether A or B will have the higher maximum temperature.

  • D. The temperature in A and B will increase at the same rate.

Explanation

Question 10 of 22

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10. Which is a correct definition of lattice enthalpy?

Select one of the following:

  • A. It is the enthalpy change that occurs when an electron is removed from 1 mol of gaseous atoms.

  • B. It is the enthalpy change that occurs when 1 mol of a compound is formed from its elements.

  • C. It is the enthalpy change that occurs when 1 mol of solid crystal changes into a liquid.

  • D. It is the enthalpy change that occurs when 1 mol of solid crystal is formed from its gaseous ions.

Explanation

Question 11 of 22

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12. Which molecule has an octahedral shape?

Select one of the following:

  • A. SF6

  • B. PCl5

  • C. XeF4

  • D. BF3

Explanation

Question 12 of 22

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11. Calcium carbonate decomposes on heating as shown below:
CaCO3 --> CaO + CO2
When 50 g of calcium carbonate are decomposed, 7 g of calcium oxide are formed. What is the percentage yield of calcium oxide?

Select one of the following:

  • A. 7%

  • B. 25%

  • C. 50%

  • D. 75%

Explanation

Question 13 of 22

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13. Which compound dissolved in water to form a solution that does NOT conduct electricity?

Select one of the following:

  • A. HCl

  • B. NaCl

  • C. CH3CH2OH

  • D. CH3COOH

Explanation

Question 14 of 22

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14. What intermolecular forces are present in gaseous hydrogen?

Select one of the following:

  • A. Hydrogen bonds

  • B. Covalent bonds

  • C. Dipole-dipole attractions

  • D. Van der Waals' forces

Explanation

Question 15 of 22

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15. What is the shape of the species ICl4-?

Select one of the following:

  • A. Pyramidal

  • B. Square Planar

  • C. Tetrahedral

  • D. Octahedral

Explanation

Question 16 of 22

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16. Which are characteristics of ions in ionic compound with a large lattice enthalpy value?

Select one of the following:

  • A. Large ionic radius and high ionic charge.

  • B. Small ionic radius and low ionic charge.

  • C. Large ionic radius and low ionic charge.

  • D. Small ionic radius and high ionic charge.

Explanation

Question 17 of 22

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17. Which species reacts most readily with propane?

Select one of the following:

  • A. Br2

  • B. Br•

  • C. Br-

  • D. Br+

Explanation

Question 18 of 22

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18. Which species is a free radical?

Select one of the following:

  • A. •CH3

  • B. +CH3

  • C. -CH3

  • D. :CH3

Explanation

Question 19 of 22

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19. Which pair of compounds can be used to prepare CH3COOCH3?

Select one of the following:

  • A. Ethanol and methanoic acid

  • B. Methanol and ethanoic acid

  • C. Ethanol and ethanoic acid.

  • D. Methanol and methanoic acid

Explanation

Question 20 of 22

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20. Which can be made in one step from a primary alcohol?
I. An aldehyde.
II. An alkene
III. A ketone

Select one of the following:

  • A. I and II only

  • B. I and III only

  • C. II and III only

  • D. I, II and III

Explanation

Question 21 of 22

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21. Which process can produce a polyester?

Select one of the following:

  • A. Addition polymerization of a dicarboxylic acid.

  • B. Condensation polymerization of a diol and a dicarboxylic acid.

  • C. Addition polymerization of a diol and dicarboxylic acid.

  • D. Condensation polymerization of a dicarboxylic acid.

Explanation

Question 22 of 22

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22. Which statement about stereoisomers is correct?

Select one of the following:

  • A. 1,2-dichloroethane has two geometrical isomers.

  • B. 1,2-dichloroethane has two optical isomers.

  • C. 1,2-dichloroethene has two geometrical isomers.

  • D. 1,2-dichloroethene has two optical isomers.

Explanation

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