Zadanie 12
Which oxide will react with water to produce the most basic solution? A. Potassium oxide B. Calcium oxide C. Sulfur trioxide D. Nitrogen dioxide
Basic, amphoteric and acidic oxides
Describe the change from basic metal oxides through amphoteric oxides to acidic non-metal oxides across a period, and write equations for the reactions of group 1 and group 2 oxides, carbon dioxide and sulfur dioxide with water.
Tę umiejętność sprawdza 21 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 21 Otwórz w wyszukiwarce z filtrami
Zadanie 1a
Outline one reason why SO2 is considered a pollutant.
Zadanie 13
Which oxide reacts with water to give a solution with a pH greater than 7? A. SO2 B. P4O10 C. Al2O3 D. Na2O
Zadanie 14
The first ionization energies of four elements with consecutive atomic numbers, A, B, C and D, are shown. An element X reacts with oxygen to form an acidic oxide. Which element could be X? A. A B. B C. C D. D
- Materiał graficzny
Zadanie 2d
Atmospheric carbon dioxide and the pH of surface seawater were measured at a monitoring station over nineteen years. The graph shows the annual mean values. (i) Outline the relationship between the carbon dioxide mixing ratio and the pH of the seawater. (ii)…
- Materiał graficzny
Zadanie 3a
(i) State one environmental problem caused by acid rain. (ii) Write an equation for the reaction of sulfur trioxide, SO3, with water in the atmosphere, in which an acid forms.
Zadanie 3b
Potassium oxide, 0.0150 mol, was dissolved in water and the solution was made up to a final volume of 250.0 cm3. (i) Write a balanced equation for the reaction of potassium oxide with water. (ii) Calculate the pH of the solution.
Zadanie 5c
Suggest a balanced equation for the reaction of carbon dioxide with water that contributes to ocean acidification.
Zadanie 8
Equal amounts of each of the following oxides are added to separate samples of water of the same volume. Which oxide gives the solution with the lowest pH? A. CO B. SO3 C. K2O D. CO2
Zadanie 8
When the same amount of each oxide is added to an equal volume of water, which oxide produces the solution with the lowest pH? A. Li2O B. Al2O3 C. SO3 D. CO2
Zadanie 2d
Calcium reacts with water to form calcium hydroxide solution and hydrogen gas. Ca(s) + 2 H2O(l) → Ca(OH)2(aq) + H2(g) (i) Use the thermochemical equations in the table to calculate the enthalpy change, in kJ, when 8.00 g of calcium reacts completely…
- Tabela do uzupełnienia
Zadanie 3b
Suggest why sulfur dioxide released into the atmosphere is an environmental concern.
Zadanie 8
Which period 3 oxide forms a solution with pH > 7 when it is added to water? A. Al2O3 B. Na2O C. SiO2 D. SO2
Zadanie 2d
Acid deposition forms when oxides of sulfur dissolve in water in the atmosphere. Write an equation for sulfur(VI) oxide reacting with water to produce an acid.
Zadanie 6a
Hydrogen sulfide, H2S, is removed from natural gas in the Claus process. Part of the hydrogen sulfide is burned in air to form sulfur dioxide, which then reacts with the remaining hydrogen sulfide to form sulfur. (i) Determine the enthalpy change, in…
Zadanie 8
Which property generally decreases as the first ionization energy of elements increases? A. Atomic radius B. Electronegativity C. Non-metallic character D. Acidity of the oxide
Zadanie 1a
(i) Write a balanced equation for the reaction of calcium with oxygen to form calcium oxide. (ii) State the block of the periodic table in which calcium is located. (iii) Calcium oxide is a basic oxide. Identify an element in period 3 that forms an amphoteric…
Zadanie 7
Which oxides form an acidic solution when they react with water? I. sulfur trioxide II. phosphorus(V) oxide III. calcium oxide A. I and II only B. I and III only C. II and III only D. I, II and III
Zadanie 7
Elements X, Y and Z are in the same period of the periodic table. The relative sizes of their atoms are shown below. Which row shows the correct general trends? A. Ionization energy: Z < Y < X; electronegativity: Z < Y < X; acidity of oxide, least to most…
- Materiał graficzny
Zadanie 5b
Some of the sulfur dioxide released is oxidized in the atmosphere to sulfur trioxide, SO3. Write an equation that shows how sulfur trioxide produces acid rain.
Zadanie 5d
Coal-fired power stations release carbon dioxide and sulfur oxides. Discuss two different measures that could reduce the environmental impact of generating electricity from coal.