Chemistry
Solve the following:
(i) What volume of oxygen is required to burn completely 90 dm3 of butane under similar conditions of temperature and pressure?
2C4H10 + 13O2 ⟶ 8CO2 + 10H2O
(ii) The vapour density of a gas is 8. What would be the volume occupied by 24.0 g of the gas at STP?
(iii) A vessel contains X number of molecules of hydrogen gas at a certain temperature and pressure. How many molecules of nitrogen gas would be present in the same vessel under the same conditions of temperature and pressure?
Related Questions
Give one equation each to show the following properties of sulphuric acid:
(i) Dehydrating property
(ii) Acidic nature
(iii) As a non-volatile acid
Give balanced chemical equations to prepare the following salts :
(i) Lead sulphate from lead carbonate.
(ii) Sodium sulphate using dilute sulphuric acid
(iii) Copper chloride using copper carbonate.
Define:
- Mole
- Gay Lussac's law
(ii) A cylinder contains 68 g of ammonia gas at s.t.p.
(1) What is the volume occupied by this gas ?
(2) How many moles of ammonia are present in the cylinder ?
(3) How many molecules of ammonia are present in the cylinder ?
[N—14, H—1]
Write balanced equation for the following reactions to take place:
(i) Catalytic hydrogenation of ethyne.
(ii) Preparation of ethyne from ethylene dibromide.
(iii) Preparation of ester using carboxylic acid.
(iv) Reaction of sodium with ethanol.
(v) Preparation of ethene using alkylhalide