Chemistry
(i) Propane burns in air according to the following equation :
C3H8 + 5O2 ⟶ 3CO2 + 4H2O.
What volume of propane is consumed on using 1000 cm3 of air, considering only 20% of air contains oxygen.
(ii) The mass of 11.2 litres of a certain gas at s.t.p. is 24 g. Find the gram molecular mass of the gas.
Related Questions
Write balanced chemical equations to show:
(i) The oxidizing action of conc. Sulphuric acid on Carbon.
(ii) The behavior of H2SO4 as an acid when it reacts with Magnesium.
(iii) The dehydrating property of conc. Sulphuric acid with sugar.
Write balanced chemical equations to show how SO3 is converted to Sulphuric acid in the contact process.
A gas cylinder can hold 1 kg. of H2 at room temp. & press. :
(i) Find the number of moles of hydrogen present.
(ii) What weight of CO2 can the cylinder hold under similar conditions to temp. & press.
(iii) If the number of molecules of hydrogen in the cylinder is X, calculate the number of CO2 molecules in the cylinder under the same conditions of temp. & press.
(iv) State the law that helped you to arrive at the above result.
[H = 1, C = 12, O = 16]
Write a balanced chemical equation for the preparation of each of the following salts:
(i) Copper carbonate
(ii) Ammonium sulphate crystals.