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.…
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 12 zadań wzorowanych na arkuszach IB z lat 2022–2025.
Zadania sprawdzające tę umiejętność: 12 Otwórz w wyszukiwarce z filtrami
Zadanie 5a
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 5b
Determine the total volume of gas present in the container at the end of the reaction described in 5a, under the same conditions of temperature and pressure.
Zadanie 21
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 19
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 20
When 10.0 cm3 of a gaseous hydrocarbon, CxHy, is burned completely, 70.0 cm3 of gaseous products is formed. This volume falls to 30.0 cm3 when the water vapour condenses. All volumes are measured at the same…
Zadanie 4
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 4e
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 3
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…
Zadanie 2
Which sample contains the fewest moles of HBr? NA = 6.02 × 1023 mol−1. Molar volume of an ideal gas at STP = 22.7 dm3 mol−1. A. 0.647 g of HBr(g) B. 50.0 cm3 of…