Talk:Sonochemistry

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Contradiction

Reference 1 and Reference 15 appear to contradict one another. One says ultrasound does not influence chemical reactions, the other says it does. At least that's what I'm getting from it 128.187.0.182 (talk) 05:07, 23 October 2010 (UTC)[reply]

UPDATE with respect to the solar cavaties

68.188.203.251 (talk) 22:40, 22 September 2012 (UTC) Would like more info on solar coronal cavaties if applicable.[reply]

Assessment comment

The comment(s) below were originally left at Talk:Sonochemistry/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

Comment(s)

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This article is very poorly written and inaccurate, leading to a great deal of confusion. The criticisms are as follows:

Sonochemistry is not concerned with understanding the effect of "sonic waves" and "wave properties" on chemical systems. Sonochemistry specifically deals with the effect of relatively high intensity "ultrasound" on liquids, leading to the initiation of chemical reactions or the enhancement of their kinetic rates.

The second sentence beginning, "Since acoustic waves..." essentially has no meaning, not to the field of sonochemistry anyway. The following sentence also has no meaning. Similarly, the sentence ending the first paragraph of this article also has no meaning.

The second paragraph starts, "The influence of sonic waves..." Well, this is wrong, because again, sonochemistry only deals with ultrasound. It is also not true that the article was left "mostly unnoticed"....actually, it spurred the formation of a whole new field. Similarly, the first sentence of the third paragraph is also incorrect, since it is exclusively high intensity ultrasound, and not sound per se, that can create acoustic cavitation.

In the fourth paragraph, "These jets and associated shock waves.." is also wrong. When a bubble collapses asymmetrically on a solid surface, shock waves cannot form. Shock waves can only form during collapse of a spherically symmetric bubble, in the liquid and not on a surface.

Furthermore, the surface is not "highly heated", it is at ambient temperature. It's the physical effect of the liquid jet that causes pitting on the surface.

The beginning of the last paragraph is also very poorly written, as it seems to imply that ultrasound directly affects the energy levels associated with bonds. This is not at all the case. Only acoustic cavitation can affect the chemistry of the ultrasound-exposed liquid.

Overall, a very poorly written article.

Last edited at 06:58, 20 June 2008 (UTC). Substituted at 06:32, 30 April 2016 (UTC)