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8090 [49]
3 years ago
3

Refer to the following gaseous molecules: (A) BeCl2 (B) SO2 (C) N2 (D) O2 (E) F2 Is best represented by two or more resonance fo

rms

Chemistry
1 answer:
Nikolay [14]3 years ago
0 0

Answer: SO2

Explanation:

The image below shows the resonance forms of SO2. Resonance forms are structures that are similar in energy and altogether describe the actual structure of a molecule. The real structure of the molecule is neither of the resonance forms but a hybrid of all the structures. Invocation of the idea of resonance simplifies apparent complexities such as equal bond length and bond angles.

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a. -7.44 °C

Explanation:

Hello there!

In this case, since the freezing point depression formula is:

\Delta T_f=-i*m*Kf

Thus, since the Van't Hoff's factor is 2 for KCl as it ionizes in K⁺ and Cl⁻, the molarity is 2.0 m (2.0mol/1.0kg) and the freezing point depression constant is 1.86 °C/m, we calculate the freezing point depression as follows:

\Delta T_f=-2*2.0m*1.86\°C /m\\\\\Delta T_f=-7.44\°C

Therefore, the answer is a. -7.44 °C.

Regards!

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