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<p>[QUOTE=&quot;EyeAppealingCoins, post: 3933573, member: 96749&quot;]That&#039;s embarrassing...</p><p><br /></p><p>What I meant is:</p><p>1)&nbsp; In terms of corrosive effects from an acid, vinegar is a much weaker acid than sulfuric acid.&nbsp; We would expect the effects from vinegar exposure to be less corrosive than an identical time exposure to H2SO4 (all other factors equal).&nbsp; The thiourea helps remove the tarnish, but my comment was meant in terms of corrosive effects.&nbsp; Thiourea, to my knowledge, doesn&#039;t lessen the corrosive effects of H2SO4.</p><p><br /></p><p>2)&nbsp; That was an egregious typo on my part.&nbsp; I meant acid would be more detrimental than acetone which is inert.&nbsp; As written it makes no sense - sorry for that.</p><p><br /></p><p>3)&nbsp; Yes, I was in artful in my phrasing.[/QUOTE]</p><p><br /></p>

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