Miscellaneous II

    What is the effect of raising the temperature on reaction rate?
    Why is hydrochloric acid (Ka ยป 1) a
    stronger acid than hydrofluoric acid
    (Ka = 3.5 x 10-4)?
    Why is phosphorous able to form such compounds as PF5 while nitrogen cannot?
    Using the valence shell electron pair repulsion theory (VSEPR), what is the shape of PF5?

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