‘Acidity’ of Quartz

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Abstract

WHEN quartz powder, obtained by finely grinding pure Brazilian pebble, is put into neutral water the pH is rapidly lowered to about 6.4. This acidity has been attributed to silicic acid, but such an explanation seems unlikely for the following reasons.

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References

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    Joseph and Oakley, J. Chem. Soc., 127, 2814 (1925).

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    Britton, J. Chem. Soc., 129, 425 (1927).

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    Baibaiev and Kargin, Acta Physiochem. U.S.S.R., 3, 97 (1935).

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VAN PRAAGH, G. ‘Acidity’ of Quartz. Nature 143, 1068 (1939) doi:10.1038/1431068a0

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