Acidified potassium dichromate(VI) solution can oxidise a solution of V2+ ions. The equation for this reaction is shown. 2– 2+ + 3+ – a Cr O + b V + c H → d Cr + e VO + f H O 2 7 3 2 What is the ratio a :b in the correctly balanced equation? A 1 : 1 B 1 ...
The residue is lixiviated and the solution of potassium chloride evaporated. When iron oxide is present in the feldspar in quantity, calcium hydrate is added to precipitate the iron salts as hydrate. ALSO: Potassium chloride is obtained from feldspar by heating the powdered substance to a ...
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reaction at the negative electrode (cathode).2](ii) Name the product formed at the positive electrode (anode).[1](iii) Name the potassium compound that remains in the solution after electrolysis[1]5(e)Complete the dot-and-cross diagram to show the electron arrangement in a molecule of ...
Samples were then embedded in 4% agarose, followed by staining with 2% osmium tetroxide and 3% Potassium Ferrocyanide using three steps of 100 W for 20 s each (P2). The reduced osmium stain was then set using a solution of 1% Thiocarbohydrazide for 10 min. The second osmium stain ...
Two micrograms of genomic DNA were incubated for 20 min at 421C in 50 ml of 0.3 M NaOH solution. Subsequently, 30 ml of 10 mM hydroquinone (Sigma), and 520 ml of freshly prepared 40.5% sodium bisulfite solution (Sigma) at pH 5 were added to the denatured samples and incubated for 16...
The results obtained will shed light on the literature for the solution to the problematic combustion characteristics of boron, which is tried to be used in many areas of the transportation industry. select article Biodiesel production from waste cooking oil by application of perovskite structure ...
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