Chemistry
(i) Give a balanced chemical equation for each of the following:
- Reaction with one reactant forming three products.
- Reaction with two reactants forming two products.
- Reaction with two reactants forming three products.
(ii) Give a balanced chemical equation for the following word equation:
Potassium dichromate reacts with sulphuric acid and sulphur dioxide to form potassium sulphate, chromium (III) sulphate and water.
Related Questions
Complete the following sentences by choosing the correct answer from the bracket:
(i) The element below sodium in the Periodic Table is …………… , reactive than sodium. (more/less)
(ii) …………… is a gas having a triple bond (Nitrogen/Ammonia)
(iii) The average kinetic energy of the molecules of the gas is proportional to the …………… (absolute temperature/pressure)
(iv) If temperature is reduced to half, …………… would also reduce to half provided pressure remains constant. (volume/pressure)
(v) Ozone depletion is mainly caused by the active …………… atoms generated from CFC in the presence of UV radiation. (chlorine/fluorine)
(i) 20 g of NaCl is dissolved in 200 g of water. Calculate its concentration.
(ii) In order to make the concentration of alcohol 25%, how much alcohol is to be added to 150 cm3 of water?
(iii) Solubility of a substance at 45°C is 36.5g. What is meant by this statement?
How will you distinguish between the following:
(i) Carbon dioxide gas and sulphur dioxide gas.
(ii) Hydrogen gas and hydrogen chloride gas?
Write the basic and acidic radicals present in : Potassium plumbite.