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Why does colour change after 5 minutes of heating during Benedict's test?
Heating is necessary to transform sugars in enediols which react with Cu(2+).
How is silver minded?
Cu+H2SO4 Gives CU2(SO4)2+H2O+S2O2
Why does the Benedict solution change colours when heated with glucose?
sugars are converted to enediols by benedict's reagent on boiling. these enediols reduce Cu(II) to Cu(I) which then forms CuOH (yellow in color). on heating CuOH yields Cu2O which is orange/red in color.
Systematic name Cu plus 1?
Cu(I), cuprous, Cu+.
What is copper's symbol in the periodic table?
The element copper (Cuprum in Latin) is symbolised by Cu
How many cu feet in 573 inches?
You can't convert between linear units and cubic units.
Why does colour change after 5 minutes of heating during Benedict's test?
Heating is necessary to transform sugars in enediols which react with Cu(2+).
What are the properties of heptane?
What are the high and low heating values for heptane ((Btu/cu ft)
What do you get when you evaporate a copper sulphate solution?
You'll get first: blue Cu-sulfate pentahydrate crystall's and after further heating: white anhydrous Cu-sulfate powder.
What are half - reactions of redox reaction CuCl and Zn which gives ZnCl2 and Cu as products?
Zn(s) --> Zn2+(aq) + 2e : Oxidation Cu+(aq) + 1e --> Cu(s) : Reduction
Why is copper a good conductor?
Copper is a good conductor to to it's mixed-valence Cu(II)/Cu(III) oxides which gives it zero electrical resistance.
How is silver minded?
Cu+H2SO4 Gives CU2(SO4)2+H2O+S2O2
What does copper oxide produce at high temperature?
Laboratory preparation of copper oxide: copper salt such as CuSO4 reacts with alkali (NaOH) to generate Cu(OH)2, and then Cu(OH)2 is decomposed by heating to prepare CuO. 　　CuSO4+2NaOH==Cu(OH)2↓+Na2SO4 　　Cu(OH)2=△=CuO+H2O Heat copper (Cu) to make copper react with oxygen (O2) to generate oxidation Copper (CuO). 　　2Cu+O2==2CuO Copper oxide can be prepared by heating metallic copper in air or decomposing copper hydroxide, copper nitrate, basic copper carbonate, etc.
Balanced molecular equation for copper 2 hydroxide with heating?
The balanced equation is Cu(OH)2 (s) (heat) = CuO + H2O.
What is the net charge of copper atom if it gain two electrons?
Cu(2-) does not exist, because Cu does not gain electrons at all being a metal. When it gives off two electrons Cu(2+) ions are formed.
What is the chemical reaction of mg plus cu so4?
mg+cuso4 gives mgso4+cu2+
Why Cuso4 sulphate gives acidic solution in h2o?
Dissolving and hydratation reaction (this gives the blue color of Cu hydrated ions)CuSO4 + 4H2O --> Cu(H2O)42+ + SO42-followed by two differend protolysis reactions, of which the first is relatively stronger acidic than the second (wich is very weakly basic):Cu(H2O)42+ + H2O ==> Cu(OH)(H2O)3+ + H3O+SO42- + H2O --> HSO4- + OH-
