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5Cu + 2NaHSO4 ๐Ÿ”ฅโ†’ CuS + 4CuO + Na2SO4 + H2โ†‘

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Reaction of copper and sodium hydrogensulfate
5CuCopper + 2NaHSO4Sodium hydrogensulfate
๐Ÿ”ฅ
โŸถ
CuSCopper(II) sulfide + 4CuOCopper(II) oxide + Na2SO4Sodium sulfate + H2โ†‘Hydrogen

The reaction of copper and sodium hydrogensulfate yields copper(II) sulfide, copper(II) oxide, sodium sulfate, and hydrogen (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:

Table of contents
  1. 1Reaction data
  2. 2Thermodynamic changes
  3. 3References
  4. 4Related reactions
  5. 5Related categories

Reaction data

Chemical equation

Reaction of copper and sodium hydrogensulfate
5CuCopper + 2NaHSO4Sodium hydrogensulfate
๐Ÿ”ฅ
โŸถ
CuSCopper(II) sulfide + 4CuOCopper(II) oxide + Na2SO4Sodium sulfate + H2โ†‘Hydrogen

General equation

Reaction of oxidizable species and reducible species
Oxidizable speciesReducing agent + Reducible speciesOxidizing agent
๐Ÿ”ฅ
โŸถ
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of copper and sodium hydrogensulfate

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CuCopper5
Reducing
Oxidizable
NaHSO4Sodium hydrogensulfate2
Oxidizing
Reducible

Products

Chemical formulaNameCoefficientTypeType in general
equation
CuSCopper(II) sulfide1
Redoxed product
โ€“
CuOCopper(II) oxide4
Oxidized
โ€“
Na2SO4Sodium sulfate1
โ€“
โ€“
H2Hydrogen1
Reduced
โ€“

Thermodynamic changes

Changes in standard condition (1)

Reaction of copper and sodium hydrogensulfate
โ—†
ฮ”rG143.0 kJ/mol
K0.89 ร— 10โˆ’25
pK25.05
5CuCrystalline solid + 2NaHSO4Crystalline solid
๐Ÿ”ฅ
โŸถ
CuSCrystalline solid + 4CuOCrystalline solid + Na2SO4Crystalline solidorthorhombic + H2โ†‘Gas
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
181.6143.0125.5โ€“
per 1 mol of
36.3228.6025.10โ€“
90.8071.5062.75โ€“
per 1 mol of
181.6143.0125.5โ€“
per 1 mol of
45.4035.7531.38โ€“
per 1 mol of
181.6143.0125.5โ€“
per 1 mol of
181.6143.0125.5โ€“

Changes in standard condition (2)

Reaction of copper and sodium hydrogensulfate
5CuCrystalline solid + 2NaHSO4Crystalline solid
๐Ÿ”ฅ
โŸถ
CuSCrystalline solid + 4CuOCrystalline solid + Na2SO4Crystalline solidmetastable + H2โ†‘Gas
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
โ€“โ€“130.9โ€“
per 1 mol of
โ€“โ€“26.18โ€“
โ€“โ€“65.45โ€“
per 1 mol of
โ€“โ€“130.9โ€“
per 1 mol of
โ€“โ€“32.73โ€“
per 1 mol of
โ€“โ€“130.9โ€“
per 1 mol of
โ€“โ€“130.9โ€“

Changes in aqueous solution (1)

Reaction of copper and sodium hydrogensulfate
โ—†
ฮ”rG194.8 kJ/mol
K0.75 ร— 10โˆ’34
pK34.13
5CuCrystalline solid + 2NaHSO4Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSCrystalline solid + 4CuOCrystalline solid + Na2SO4Ionized aqueous solution + H2โ†‘Gas
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
183.1194.8โˆ’41.5โˆ’1
per 1 mol of
36.6238.96โˆ’8.30โˆ’0.2
91.5597.40โˆ’20.8โˆ’0.5
per 1 mol of
183.1194.8โˆ’41.5โˆ’1
per 1 mol of
45.7748.70โˆ’10.4โˆ’0.3
per 1 mol of
183.1194.8โˆ’41.5โˆ’1
per 1 mol of
183.1194.8โˆ’41.5โˆ’1

Changes in aqueous solution (2)

Reaction of copper and sodium hydrogensulfate
โ—†
ฮ”rG212.4 kJ/mol
K0.62 ร— 10โˆ’37
pK37.21
5CuCrystalline solid + 2NaHSO4Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSCrystalline solid + 4CuOCrystalline solid + Na2SO4Ionized aqueous solution + H2โ†‘Un-ionized aqueous solution
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
178.9212.4405โ€“
per 1 mol of
35.7842.4881.0โ€“
89.45106.2203โ€“
per 1 mol of
178.9212.4405โ€“
per 1 mol of
44.7353.10101โ€“
per 1 mol of
178.9212.4405โ€“
per 1 mol of
178.9212.4405โ€“

Thermodynamic data of reactants

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
Cu (cr)0[1]0[1]33.150[1]24.435[1]
Cu (g)338.32[1]298.58[1]166.38[1]20.786[1]
NaHSO4 (cr)-1125.5[1]-992.8[1]113.0[1]โ€“
NaHSO4 (ai)-1127.46[1]-1017.80[1]190.8[1]-38[1]
NaHSO4 (cr)
1 hydrate
-1421.7[1]-1231.6[1]155[1]โ€“
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution

Thermodynamic data of products

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
CuS (cr)-53.1[1]-53.6[1]66.5[1]47.82[1]
CuO (cr)-157.3[1]-129.7[1]42.63[1]42.30[1]
Na2SO4 (cr)
orthorhombic
-1387.08[1]-1270.16[1]149.58[1]128.20[1]
Na2SO4 (cr)
metastable
โ€“โ€“154.934[1]129.29[1]
Na2SO4 (ai)-1389.51[1]-1268.36[1]138.1[1]-201[1]
Na2SO4 (cr)
10 hydrate
-4327.26[1]-3646.85[1]592.0[1]โ€“
H2 (g)0[1]0[1]130.684[1]28.824[1]
H2 (ao)-4.2[1]17.6[1]577[1]โ€“
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas, (ao):Un-ionized aqueous solution

References

List of references

  1. 1
    Janiel J. Reed (1989)
    The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI Units
    National Institute of Standards and Technology (NIST)