Chemistry · Differential and integral forms of zero and first-order reactions, their characteristics and half-lives
Which of the following statements is not true?
Which of the following statements is not true?
- A. The ratio of the mean speed of the RMS speed is independent of the temperature
- B. The square of the mean speed of the molecules is equal to the mean square speed at a certain temperature
- C. Mean kinetic energy of the gas-molecules at any given temperature is independent of the mean speed
- D. The difference between RMS speed and mean speed at any temperature for different diminishes as larger and yet larger molar masses are considered
Step-by-step solution
The square of the mean speed (v_avg)^2 is always less than the mean square speed (v_rms)^2 because of the distribution of molecular speeds; their ratio is a constant (8/(3π)) independent of temperature, so they are never equal.
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