Question

In: Chemistry

What is the reaction for oxidation of copper when heated?

What is the reaction for oxidation of copper when heated?

Solutions

Expert Solution

Oxidation is chemical reaction where a loss of electron occur, it is also define as the addition of oxygen, removal of hydrogen, increase in oxidation state etc. Thus, on oxidation Cu would lose its electron to form Cu2+ ions.

Example for oxidation reactions are as follows:

Na -----------> Na+ + e

C + O2 -----------> CO2

Now, coming back to your questions, copper does not oxidise on heating, on heating copper absorbs sufficient energy and becomes activated for a reactions. However, if heated in an open system where air is present then copper reacts with oxygen present in it for form a black solid of copper oxide.

The balanced chemical equation for the reactions is as follows:

2Cu + O2 -----------> 2CuO

Please note if copper heated in absence of oxygen then no oxidation of copper would occur.


Related Solutions

Write chemical equations for the five reactions described: The first reaction involves the oxidation of copper...
Write chemical equations for the five reactions described: The first reaction involves the oxidation of copper with nitric acid, resulting in a blue-green colored copper (II) nitrate, Cu(NO3)2, solution. The second reaction involves adding sodium hydroxide. This results in a double replacement or precipitation reaction produces a milky-blue copper (II) hydroxide solid. The third reaction involves decomposition of the of the hydroxide compound to a black copper (II) oxide solid while applying heat. After filtering the oxide, sulfuric acid is...
When the following oxidation–reduction reaction in a basic solution is balanced, what is the lowest whole-number...
When the following oxidation–reduction reaction in a basic solution is balanced, what is the lowest whole-number coefficient for OH−and on which side of the balanced equation should it appear? S2O82–(aq)+NO(g)→SO42–(aq)+NO3–(aq) a. 4, product side b. 8, reactant side c. 12, reactant side d. 8, product side e. 4, reactant side
When the following oxidation–reduction reaction is balanced with lowest whole-number coefficients, what is the coefficient for...
When the following oxidation–reduction reaction is balanced with lowest whole-number coefficients, what is the coefficient for Mn2+(aq)? __MnO4–(aq) + __C2H5CHO(aq) + __H+ (aq) → __Mn2+(aq) + __C2H5COOH(aq) +__ H2O(l) When I balanced this equation I got the following: 1MnO4–(aq) + 1C2H5CHO(aq) + 6H+ (aq) → 1Mn2+(aq) + 1C2H5COOH(aq) +3 H2O(l) so therefore, the answer would be 1. However, the answer is 2. Can someone explain why the answer is 2 and what I did wrong?
. Write electronic configurations of beryllium with oxidation number +2, copper, and antimony with oxidation number...
. Write electronic configurations of beryllium with oxidation number +2, copper, and antimony with oxidation number +3. For each element, write electronic block where they belong (s, p, d, f) and valence electrons and quantum number for one electron of each element.
When heated, KClO3 decomposes into KCl and O2. KCLO3 = 2KCL + 3O2 If this reaction...
When heated, KClO3 decomposes into KCl and O2. KCLO3 = 2KCL + 3O2 If this reaction produced 14.1 g of KCl, how much O2 was produced (in grams)?
When the following oxidation-reduction reaction in acidic solution is balanced, what is the lowest whole-number coefficient...
When the following oxidation-reduction reaction in acidic solution is balanced, what is the lowest whole-number coefficient for H2O, and on which side of the balanced equation should it appear? S2O82–(aq)+NO(g)→SO42–(aq)+NO3–(aq) a. 4, product side b. 8, reactant side c. 12, reactant side d. 8, product side e. 4, reactant side
What is the reduction reaction and the oxidation reaction in this reaction? ___ Fe(NH4)2(SO4)2·6H2O + ___...
What is the reduction reaction and the oxidation reaction in this reaction? ___ Fe(NH4)2(SO4)2·6H2O + ___ H2C2O4 + ___ K2C2O4 + ___ H2O2 → ___ K,Fey(C2O4)z·nH2O + ___ (NH4)2SO4 + ___ H2SO4 + ___ H2O
A) A sample of solid copper is heated with an electrical coil. If 72.4 Joules of...
A) A sample of solid copper is heated with an electrical coil. If 72.4 Joules of energy are added to a 11.4 gram sample and the final temperature is 38.3°C, what is the initial temperature of the copper? Answer:_________________ °C. B)When NO(g) reacts with H2(g) to form N2(g) and H2O(l) , 376 kJ of energy are evolved for each mole of NO(g) that reacts. Write a balanced thermochemical equation for the reaction with an energy term in kJ as part...
A block made of copper with a mass of 0.90 kg is heated to 800°C, then...
A block made of copper with a mass of 0.90 kg is heated to 800°C, then dropped into 5.00 kg of water at 11°C. What is the total change in entropy (in J/K) of the block-water system, assuming no energy is lost by heat from this system to the surroundings? The specific heat of copper is 387 J/(kg · K), and the specific heat of water is 4,186 J/(kg · K). (Hint: note that dQ = mcdT.)
A 39.7g piece of copper rod is heated to 98 degrees celsius and then placed in...
A 39.7g piece of copper rod is heated to 98 degrees celsius and then placed in an insulated container containing 50.7 grams of water at 18.3 degrees celsius. Assuming no loss of water and using the following parameters, what is the final temperature of the system? Assume that the container is always at the same temperature as that of the water. Ccopper 0.387(J/gxK) CH2O 4.184(J/gxK) Cvessel 12.30 (J/K)
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT