Zadanie 24
Which volume of oxygen is required to react fully with 40.0 cm3 of butane to ensure complete combustion? 2 C4H10(g) + 13 O2(g) → 8 CO2(g) + 10 H2O(g) A. 520 cm3 B. 260 cm3 C. 130 cm3 D. 40.0 cm3
Avogadro's law and molar volume of gases
Apply Avogadro's law that equal gas volumes at the same temperature and pressure contain equal numbers of molecules, use the molar volume of 22.7 dm³ mol⁻¹ at STP, and use mole ratios from equations to calculate reacting gas volumes.
Tę umiejętność sprawdza 11 zadań wzorowanych na arkuszach IB z lat 2023–2026.
Zadania sprawdzające tę umiejętność: 11 Otwórz w wyszukiwarce z filtrami
Zadanie 3
What volume of propane gas, in cm3, must be burned completely in oxygen to give 90 cm3 of carbon dioxide, all volumes being measured at the same temperature and pressure? C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g) A. 18 B. 30 C. 90 D.…
Zadanie 5b
90.0 cm3 of buta-1,3-diene and 150.0 cm3 of hydrogen are mixed in a container at 450 K and 101 kPa and react to form butane only. Determine the maximum volume of butane that can be formed, measured at the same temperature and pressure.
Zadanie 27
30 cm3 of butane was completely burned in 250 cm3 of oxygen according to the following equation. 2 C4H10(g) + 13 O2(g) → 8 CO2(g) + 10 H2O(l) What volume of oxygen remains unreacted, measured at the original conditions? A. 55…
Zadanie 4
0.30 dm3 of nitrogen is mixed with 0.60 dm3 of hydrogen and the mixture reacts as completely as possible. All gas volumes are measured at the same temperature and pressure. N2(g) + 3 H2(g) → 2 NH3(g) What volume of ammonia, in…
Zadanie 25
Equal volumes of the gases Q2 and R2 are mixed in a sealed container and react until one of them is used up, forming the gas QR2. The volume of QR2 formed, measured under the same conditions, is 50 cm3.…
Zadanie 25
10.0 cm3 of a gaseous hydrocarbon, CxHy, is burned completely in exactly the required volume of oxygen. The gaseous products occupy 70.0 cm3. This falls to 30.0 cm3 once the water vapour present condenses, with…
Zadanie 3
Which species are present after 14 dm3 of ethyne has reacted with 20 dm3 of hydrogen to produce ethane? All gas volumes are measured at the same temperature and pressure. C2H2(g) + 2 H2(g) → C2H6(g) A. 14 dm3 of…
Zadanie 5e
20.0 cm3 of propane is mixed with 150.0 cm3 of oxygen and burnt completely. C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l) Determine the total volume of gas present once the products have cooled to the starting temperature and…
Zadanie 1b
Outline why some of these elements have atomic volumes close to 11 350 cm3 mol−1 while others have values close to 22 700 cm3 mol−1.
Zadanie 2
50 cm3 of gas X reacts with 20 cm3 of gas Y to form 20 cm3 of a gaseous product and leaves 10 cm3 of X unreacted. All volumes are measured at the same temperature and pressure. What is the empirical formula of…