Chemistry
Explain why :
(a) it is necessary to find out the ratio of reactants required in the preparation of sodium sulphate,
(b) fused calcium chloride is used in the preparation of FeCl3
(c) Anhydrous FeCl3 cannot be prepared by heating hydrated Iron (III) chloride.
Related Questions
Fill in the blanks with suitable words :
An acid is a compound which when dissolved in water forms hydronium ions as the only …………… ions. A base is a compound which is soluble in water contains …………… ions. A base reacts with an acid to form a …………… and water only. This type of reaction is known as …………….
What would you observe when:
(a) blue litmus is introduced into a solution of hydrogen chloride gas.
(b) red litmus paper is introduced into a solution of ammonia in water,
(c) red litmus paper is introduced in caustic soda solution?
Choose the most appropriate answer from
[SO2, SiO2, Al2O3, CO, MgO, Na2O]
(a) A covalent oxide of a metalloid
(b) An oxide which when dissolved in water form acid.
(c) A basic oxide
(d) An amphoteric oxide
Give the pH value of pure water. Does it change if common salt is added to it.