Chemistry
(a) What do you mean by stoichiometry?
(b) Define atomicity of a gas. State the atomicity of Hydrogen, Phosphorus and Sulphur.
(c) Differentiate between N2 and 2N.
Mole Concept
59 Likes
Answer
(a) Stoichiometry measures quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry.
(b) Atomicity is the number of atoms in a molecule of an element.
Atomicity of hydrogen is 2, phosphorus is 4 and sulphur is 8.
(c) Difference between N2 and 2N
| N2 | 2N |
|---|---|
| It means 1 molecule of nitrogen. | It means two atoms of nitrogen. |
| It can exist independently. | It cannot exist independently. |
Answered By
40 Likes
Related Questions
Explain the terms empirical formula and molecular formula.
Give three kinds of information conveyed by the formula H2O.
(a) What are the main applications of Avogadro's Law?
(b) How does Avogadro's Law explain Gay-Lussac's Law of combining volumes?
(a) The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
(b) What is the value of Avogadro's number ?
(c) What is the value of molar volume of a gas at S.T.P.?