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The molecular formula of Chromium III Sulfate is Cr 2(SO 4) 3.It serves as electrolyte to obtain chromium metal.It is used in chrome plating to decorate and protect metals.It is also used in green paints, ceramic glazes and inks.It is used in textile dyes particularly for dyeing of khaki cloth.It is extensively used in the leather industry during the process of tanning.It turns green when it is subjected to heat.Ĭhromium III Sulfate is produced as a byproduct in the process of Jones Oxidation during which a solution of sodium dichromate or potassium dichromate is dissolved with sulfuric acid to oxidize alcohols.Ĭhromium(III) sulfate can also be obtained by treating chromium III hydroxide with dilute sulfuric acid.Chromium III sulfate is a blue-gray or violet-gray amorphous solid.When we write the two together we get Cr 2 (SO 4 ) 3. So, to arrive at the formula of Chromium III Sulfate, we will interchange the charges of ions Cr +3and SO 4 -2 to get Cr 2 and (SO 4 ) 3.Cr is placed outside the parentheses as it is not a polyatomic ion. So, polyatomic ion SO 4 -2 will be placed inside parenthesis. The sulfur and oxygen atoms share a covalent bond.So, the Charge carried by the chromium cation Cr +3 will be written as the subscript of the sulfate anion SO 4 -2 and the Charge carried by the sulfate anion SO4-2 will be written as subscript for the chromium cation Cr +3.Chromium III has a valence of 3 and Sulfate has a valence of 2, we will need 2 chromium and 3 sulfate ions to balance 6 valence ties.It is an ionic compound where Chromium (Cr) is the metal with Cr+3 cation and sulfate is the SO4-2 anion. The formula of Chromium III Sulfate is Cr 2(SO 4) 3.The percentages of individual elements of Cr 2(SO 4) 3 (dichromium trisulfate) are Cr - 26.52%, O - 48.95% and S - 24.53%.As seen in the structure of Chromium III Sulfate in the image above, the ratio of chromium to sulfate in this inorganic compound is 2:3.Sugar Solubility in Water - Solubility of sugar in water.
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Where M mA n is the slightly soluble substance and M n+ and A m- are the ions produced in solution by dissosiation of M mA n. For ionic compounds with limited solubility in water, an equilibrium constant, K sp, can be defined from the ion concentration in water from the equation: