Practice Paper 1 (DP IB Chemistry: HL)

A periodic table is needed for this question

What mass of a methane, CH₄, would occupy a volume of 3 dm ³ at 25^oC and 100 kPa pressure?

How many ions are present in 0.02 mol of (NH₄)₃PO₄?

A periodic table is needed for this question

Which row correctly describes the subatomic particles found in ²⁶Mg²⁺?

Which of the following calculations gives the correct calculation to find the energy, in kJ, for a photon of blue light given the wavelength ƛ = 550 nm.

h = 6.626 x 10⁻³⁴J s; c =  2.988 x 10⁸ m s^-1

Chlorine has two naturally occurring isotopes, ³⁵Cl and ³⁷Cl, whose abundance is 75% and 25% respectively. The mass spectrum of chlorine gas would be

The order of the elements in the periodic table is

What is the charge on the complex ion in [Fe(H₂O)₆]Br₂ ?

Which of the following statements about alloys are correct? 

1.   Alloys contain atoms of all the same sizes
2.   An alloy is a mixture of a metal with another element
3.   Alloys are harder than the pure metal they originate from

In which complexes does iron have an oxidation state of +3? 

1.   [Fe(H₂O)₆]³⁺
2.   [Fe(H₂O)₅(CN)]²⁺
3.   [Fe(CN)₆]³⁻

Which of the following dipole labels are not correct?

Which row in the table is correct?

Which species contain delocalised electrons?

Which systems are correctly described? 

1. Matter and energy can be transferred across the boundary of an open system
2. Only matter can be transferred across the boundary of a closed system
3. Matter and energy cannot be transferred across the boundary of an isolated system

The hydration enthalpy of anhydrous copper(II) sulfate, labelled as ΔH_exp, cannot be measured directly. It can be found indirectly by determining the solution enthalpies of anhydrous and hydrated copper(II) sulfate.

Which of the following statements correctly explains why the value for ΔH_exp for this reaction cannot be measured directly? 

1. Hydrated copper(II) sulfate is not produced in a controlled manner
2. Dissolving of the solid is difficult to avoid
3. Heat energy is trapped inside the solid copper(II) sulfate

Which of the following conditions will mean a reaction is never feasible?

Thermodynamic data for the components for magnesium oxide are

Which of the following is used to calculate the lattice enthalpy of magnesium oxide

Zinc reacts with copper sulfate according to the following equation:

Zn (s) + CuSO₄ (aq) → Cu (s) + ZnSO₄ (aq)

Rates of reaction can be found by measuring how certain properties change during the course of the reaction. Which of these properties could be used?

Boltzmann distributions are shown in the two diagrams below.

In diagram 1, one line, P or Q, corresponds to the activation energy in the presence of a catalyst and the other line corresponds to the activation energy of the same reaction in the absence of a catalyst.

In diagram 2, one curve, X or Y, corresponds to a temperature higher than that of the other curve.

Which combination gives the correct curve and line?

Which of the following statements about the rate constant, k, are correct? 

1.   High values of k are associated with fast reactions
2.   The rate constant is affected by temperature
3.   The units of k are independent of the orders of reaction

Which of the following statements about the Arrhenius plot are correct? 

1.     The gradient has a value of E_a / R
2.     The intercept on the y-axis is ln A
3.     The Arrhenius plot will give a value for activation energy in J mol^-1

When gaseous dinitrogen pentoxide, N₂O₅ (g), decomposes at 358 K, the following equilibrium is established:

2N₂O₅ (g)  ⇌ 4NO₂ (g) + O₂ (g)

2.0 mol of N₂O₅ (g) were placed in a 1.0 dm³ container and allowed to reach equilibrium. At equilibrium 1.0 mol of N₂O₅ (g) were present. What is the value of K_c?

Which change will not decrease the entropy of a system?

Using your knowledge of the Brønsted-Lowry theory, which of the following correctly describes ammonia?

Iron structures can be damaged by dry deposition such as the equation below:

Fe (s) + SO₂ (g) + O₂ (g)  →   FeSO₄ (s)

Which is true?

1. Iron is a reducing agent
2. Sulfur is a reducing agent
3. The enthalpy change is ΔH_f

Which of the following statements is not correct?

The table shows the pK_a and K_a values for four acids

Which of the following is the correct order of increasing strength of the acids

Below are three statements about voltaic cells. 

1. 1.    A redox reaction takes place which produces electrical energy
   2.    At the cathode an oxidation reaction occurs
   3.    Electrons move from the anode to the cathode 

The correct statements are

Use the following electrode potentials to answer the question.

Sn²⁺ (aq) + 2e^- ⇌ Sn (s)      E^θ = -0.14 V

Fe³⁺ (aq) + e^- ⇌  Fe²⁺ (aq)  E^θ = +0.77 V

What will be the EMF, in V, when the following voltaic cell is connected?

Sn (s) + 2Fe³⁺ (aq) → 2Fe²⁺ (aq) + Sn²⁺ (aq)

Which of the following can be used for a standard hydrogen electrode (SHE)?

Which of the halogenoalkanes shown below contains a tertiary carbon atom?

Which compound will react most readily by an S_N2 mechanism?

Shown below is a reaction sequence starting with 1-chlorobutane.

    I                          II                                  III

     C₄H₉Cl      → C₄H₉OH        →        C₃H₇COOH      →     C₃H₇COOC₃H₇

What is the correct classification of the types of reactions shown?

Which of the following would not be a product of the reaction of pent-1-ene with HCl?

Compound K, C₅H₁₂O, is oxidised by acidified sodium dichromate(VI) to compound L.

Compound L reacts with butan-2-ol in the presence of a little concentrated sulfuric acid to give liquid M.

What could be the formula of liquid M?

Which two molecules are cis-trans isomers of each other?

The synthesis of ethyl butanoate can be carried out in three steps:

                                         I                   II                      III

                        C₄H₉Br   →  C₄H₉OH  →  C₃H₇COOH  →  C₃H₇COOC₂H₅  

What is the correct classification of the steps?

Below is a ¹H NMR spectrum for an unknown organic compound. The relative areas under the peaks are labelled

Which of the following compounds could give this spectrum?

Propanone is made by a two stage process. 

The second stage involves oxidation. 

Propene    →     X   →   Propanone

What is the functional group of compound X?

Which spectroscopic technique can be used to determine bond length and angles?