Chemistry
(a) State whether the following statements are True or False. Justify your answer.
(1) According to Mendeleev, periodic properties of elements are periodic functions of their atomic number.
(2) Non-metals form oxides that are basic in nature.
(b) Write the chemical reaction of Ammonium hydroxide with soluble salt of lead (Pb2+ ion).
Related Questions
Name the gas evolved in each of the following cases.
(a) Reaction of sodium with conc. HCl
(b) Reaction of sodium thiosulphate with HCl.
Write the balanced chemical equation for the following.
(a) Lead nitrate is treated with hydrochloric acid.
(b) Zinc oxide is treated with potassium hydroxide.
(c) Silver nitrate is treated with sodium cyanide.
Define:
(a) Covalent bond
(b) Co-ordinate bond
Solve
A compound has the following percentage composition by mass, carbon 14.4%. hydrogen 1.2% and chlorine 84.5%. Determine the empirical formula of this compound. (H=1, C=12 and Cl=35.5)