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The hydrogen chromate ion may be protonated, with the formation of molecular chromic acid, H 2 CrO 4, but the pK a for the equilibrium H 2 CrO 4 ⇌ HCrO − 4 + H + is not well characterized. Reported values vary between about −0.8 and 1.6. [4] The dichromate ion is a somewhat weaker base than the chromate ion: [5]
Subjecting the DBA dianion to 4,4'-dimethylbenzophenone affords the expected [4+2] cycloaddition products, with a C-O bridge originating from the carbonyl. However, subjecting the DBA dianion to 3,3-dimethyl-1-butyne does not lead to a [4+2] cycloaddition product, but rather a C(sp)-H activation product.
In using this item, the hair gets cleaned, but the 'conditioner' part of the product only coats the hair with silicone, which doesn't 'close' its cuticles.
The best part about Raw Sugar Men 2-in-1 Shampoo & Conditioner is that it is a completely natural product, featuring nature’s finest ingredients. It is a safe and gentle product to use, even on ...
Setting [CrO 2− 4] equal to [HCrO − 4] in eq. 1, [H +] = 1 / K 1 , or pH = log K 1. This relationship is independent of pCr, so it requires a vertical line to be drawn on the predominance diagram. Red line Hydrogen chromate and dichromate have equal concentrations. Setting [HCrO − 4] equal to [Cr 2 O 2− 7] in Eq. 2, [HCrO − 4 ...
Vosene shampoo is available in four varieties: Original Medicated, Frequent Anti-Dandruff, 2 in 1 Gentle Action and Activating Shampoo. The Original formula contains salicylic acid, an anti-dandruff ingredient. However, this was not the active ingredient prior to the late 1980s.
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