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ketchup - the vinegar ( acetic acid ) in ketchup changes the copper oxide to copper acetate which is soluable in water.

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Is oxidation of copper exothermic or endothermic?

Copper oxidation is endothermic.


What is the oxidation state of cupric ion in copper tartar-ate?

The oxidation state of the cupric ion in copper tartarate is +2. Copper (II) ion, or cupric ion, has an oxidation state of +2 due to the loss of 2 electrons. In the case of copper tartarate, the ligand (tartarate) does not affect the oxidation state of the central copper ion.


Is it possible to reverse engineer copper?

It is not possible to reverse engineer copper. Copper is a basic element.


Copper oxidation number?

It depends on the compound. +1 and +2 are the more common ones (as in Cu2I2 and CuI2 respectively). In elemental form, its oxidation number is zero.


Difference between cucl and cu2cl2?

CuCl is copper (I) chloride, where copper has a +1 oxidation state. Cu2Cl2 is copper (II) chloride, where copper has a +2 oxidation state. The difference lies in the oxidation state of copper present in the compounds.


What is oxidation number of Cu?

If the question is Cu2, then it is equivalent to Cu and the oxidation number for any element is zero. If the question is Cu2+, then the oxidation number is +2.


What is the oxidation state of copper in the compound CuCl2?

+2 oxidation state for the Copper. -1 for the Chloride


What is the oxidation number of copper in copper iodide?

Copper iodide has a chemical formula of CuI. In this compound, the oxidation number of copper is +1.


What is the oxidation state for copper?

The common oxidation states for copper are +1 and +2. However, copper can exhibit other oxidation states such as +3 and even +4 in some rare cases.


What are the formulas for the compounds called copper (I) chloride and copper (II) chloride?

The formula for copper(I) chloride is CuCl, where copper has a +1 oxidation state. The formula for copper(II) chloride is CuCl2, where copper has a +2 oxidation state.


Is oxidation of copper exothermic?

No, the oxidation of copper is not exothermic. It is an endothermic process, meaning it absorbs heat from its surroundings as it occurs.


What is the oxidation number of the copper in CuNH33Cl-NO3?

The oxidation number of copper in CuNH3Cl2NO3 is +1. This is because the overall charge of the complex ion is -1, and the oxidation numbers of N, H, Cl, and O remain the same as their typical values, leaving copper with a +1 oxidation state to balance the charge.