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When liquid phosphorus trichloride reacts with water, the products are
Pitch
The perception of the frequency of a sound, determining how high or low a tone sounds.
Frequency
The rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves) or in an electromagnetic field (as in radio waves and light), usually measured in hertz.
Hue
A specific shade of a color perceived by the eye, determined by its wavelength of light.
Timbre
The quality of a musical note, sound, or tone that distinguishes different types of sound production, such as voices or musical instruments.
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