'Stability of a crystal is reflected in themagnitude of its melting point'. Comment. Collect melting points of solid water, ethyl alcohol, diethyl ether and methane from a data book. What can you say about the intermolecular forces between these molecules?
In context with the solid state of a crystal, the stability of a crystal is dependent upon the packaging of atoms in it. The stronger the intermolecular forces of attraction present in the structure, the higher will be the stability of the crystal and vice versa.
Melting point of:
Solid water→ 273 K → has strong intermolecular hydrogen bonding
Ethyl alcohol → 155 K → has intermolecular hydrogen bonding
Diethyl Ether→156 K → has dipole-dipole interaction
Methane → 91 K → has weak Vander waals forces
In a reaction between A and B, the initial rate of reaction (r0) was measured for different initial concentrations of A and B as given below:
A/ mol L - 1 |
0.20 | 0.20 | 0.40 |
B/ mol L - 1 |
0.30 | 0.10 | 0.05 |
r0/ mol L - 1 s - 1 |
5.07 × 10 - 5 |
5.07 × 10 - 5 |
1.43 × 10 - 4 |
What is the order of the reaction with respect to A and B?
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
Welcome to the NCERT Solutions for Class 12 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 2 , Question 6: 'Stability of a crystal is reflected in themagnitude of its melting point'. Comment. Collect....
Comments