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CuSCN + 8HNO3 ๐Ÿ”ฅโ†’ CuSO4 + 9NO2โ†‘ + CO2โ†‘ + 4H2โ†‘

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Reaction of copper(I) thiocyanate and nitric acid
CuSCNCopper(I) thiocyanate + 8HNO3Nitric acid
๐Ÿ”ฅ
โŸถ
CuSO4Copper(II) sulfate + 9NO2โ†‘Nitrogen dioxide + CO2โ†‘Carbon dioxide + 4H2โ†‘Hydrogen

The reaction of copper(I) thiocyanate and nitric acid yields copper(II) sulfate, nitrogen dioxide, carbon dioxide, 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(I) thiocyanate and nitric acid
CuSCNCopper(I) thiocyanate + 8HNO3Nitric acid
๐Ÿ”ฅ
โŸถ
CuSO4Copper(II) sulfate + 9NO2โ†‘Nitrogen dioxide + CO2โ†‘Carbon dioxide + 4H2โ†‘Hydrogen

General equation

Reaction of reducing species and oxidizing species
Reducing speciesReducing agent + Oxidizing speciesOxidizing agent
โŸถ
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of copper(I) thiocyanate and nitric acid

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CuSCNCopper(I) thiocyanate1
Reducing
Reducing
HNO3Nitric acid8
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
CuSO4Copper(II) sulfate1
Oxidized
โ€“
NO2Nitrogen dioxide9
Redoxed product
โ€“
CO2Carbon dioxide1
โ€“
โ€“
H2Hydrogen4
Reduced
โ€“

Thermodynamic changes

Changes in standard condition

Reaction of copper(I) thiocyanate and nitric acid
โ—†
ฮ”rGโˆ’18.6 kJ/mol
K1.81 ร— 103
pKโˆ’3.26
CuSCNCrystalline solid + 8HNO3Liquid
๐Ÿ”ฅ
โŸถ
CuSO4Crystalline solid + 9NO2โ†‘Gas + CO2โ†‘Gas + 4H2โ†‘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€“โˆ’18.6โ€“โ€“
โ€“โˆ’18.6โ€“โ€“
per 1 mol of
โ€“โˆ’2.33โ€“โ€“
per 1 mol of
โ€“โˆ’18.6โ€“โ€“
per 1 mol of
โ€“โˆ’2.07โ€“โ€“
per 1 mol of
โ€“โˆ’18.6โ€“โ€“
per 1 mol of
โ€“โˆ’4.65โ€“โ€“

Changes in aqueous solution (1)

Reaction of copper(I) thiocyanate and nitric acid
โ—†
ฮ”rG122.56 kJ/mol
K0.34 ร— 10โˆ’21
pK21.47
CuSCNIonized aqueous solution + 8HNO3Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSO4Un-ionized aqueous solution + 9NO2โ†‘Gas + CO2โ†‘Gas + 4H2โ†‘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€“122.56โ€“โ€“
โ€“122.56โ€“โ€“
per 1 mol of
โ€“15.320โ€“โ€“
per 1 mol of
โ€“122.56โ€“โ€“
per 1 mol of
โ€“13.618โ€“โ€“
per 1 mol of
โ€“122.56โ€“โ€“
per 1 mol of
โ€“30.640โ€“โ€“

Changes in aqueous solution (2)

Reaction of copper(I) thiocyanate and nitric acid
โ—†
ฮ”rG193.0 kJ/mol
K0.15 ร— 10โˆ’33
pK33.81
CuSCNIonized aqueous solution + 8HNO3Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSO4Un-ionized aqueous solution + 9NO2โ†‘Gas + CO2โ†‘Gas + 4H2โ†‘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
โ€“193.0โ€“โ€“
โ€“193.0โ€“โ€“
per 1 mol of
โ€“24.13โ€“โ€“
per 1 mol of
โ€“193.0โ€“โ€“
per 1 mol of
โ€“21.44โ€“โ€“
per 1 mol of
โ€“193.0โ€“โ€“
per 1 mol of
โ€“48.25โ€“โ€“

Changes in aqueous solution (3)

Reaction of copper(I) thiocyanate and nitric acid
โ—†
ฮ”rG130.94 kJ/mol
K0.11 ร— 10โˆ’22
pK22.94
CuSCNIonized aqueous solution + 8HNO3Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSO4Un-ionized aqueous solution + 9NO2โ†‘Gas + CO2โ†‘Un-ionized aqueous solution + 4H2โ†‘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€“130.94โ€“โ€“
โ€“130.94โ€“โ€“
per 1 mol of
โ€“16.367โ€“โ€“
per 1 mol of
โ€“130.94โ€“โ€“
per 1 mol of
โ€“14.549โ€“โ€“
per 1 mol of
โ€“130.94โ€“โ€“
per 1 mol of
โ€“32.735โ€“โ€“

Changes in aqueous solution (4)

Reaction of copper(I) thiocyanate and nitric acid
โ—†
ฮ”rG201.3 kJ/mol
K0.54 ร— 10โˆ’35
pK35.27
CuSCNIonized aqueous solution + 8HNO3Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSO4Un-ionized aqueous solution + 9NO2โ†‘Gas + CO2โ†‘Un-ionized aqueous solution + 4H2โ†‘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
โ€“201.3โ€“โ€“
โ€“201.3โ€“โ€“
per 1 mol of
โ€“25.16โ€“โ€“
per 1 mol of
โ€“201.3โ€“โ€“
per 1 mol of
โ€“22.37โ€“โ€“
per 1 mol of
โ€“201.3โ€“โ€“
per 1 mol of
โ€“50.33โ€“โ€“

Changes in aqueous solution (5)

Reaction of copper(I) thiocyanate and nitric acid
โ—†
ฮ”rG152.9 kJ/mol
K0.16 ร— 10โˆ’26
pK26.79
CuSCNIonized aqueous solution + 8HNO3Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSO4Crystalline solid + 9NO2โ†‘Gas + CO2โ†‘Gas + 4H2โ†‘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
644.52152.91650โ€“
644.52152.91650โ€“
per 1 mol of
80.56519.11206.3โ€“
per 1 mol of
644.52152.91650โ€“
per 1 mol of
71.61316.99183.3โ€“
per 1 mol of
644.52152.91650โ€“
per 1 mol of
161.1338.23412.5โ€“

Changes in aqueous solution (6)

Reaction of copper(I) thiocyanate and nitric acid
โ—†
ฮ”rG223.3 kJ/mol
K0.76 ร— 10โˆ’39
pK39.12
CuSCNIonized aqueous solution + 8HNO3Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSO4Crystalline solid + 9NO2โ†‘Gas + CO2โ†‘Gas + 4H2โ†‘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
627.7223.33435โ€“
627.7223.33435โ€“
per 1 mol of
78.4627.91429.4โ€“
per 1 mol of
627.7223.33435โ€“
per 1 mol of
69.7424.81381.7โ€“
per 1 mol of
627.7223.33435โ€“
per 1 mol of
156.955.83858.8โ€“

Changes in aqueous solution (7)

Reaction of copper(I) thiocyanate and nitric acid
โ—†
ฮ”rG161.3 kJ/mol
K0.55 ร— 10โˆ’28
pK28.26
CuSCNIonized aqueous solution + 8HNO3Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSO4Crystalline solid + 9NO2โ†‘Gas + CO2โ†‘Un-ionized aqueous solution + 4H2โ†‘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
624.23161.31554โ€“
624.23161.31554โ€“
per 1 mol of
78.02920.16194.3โ€“
per 1 mol of
624.23161.31554โ€“
per 1 mol of
69.35917.92172.7โ€“
per 1 mol of
624.23161.31554โ€“
per 1 mol of
156.0640.33388.5โ€“

Changes in aqueous solution (8)

Reaction of copper(I) thiocyanate and nitric acid
โ—†
ฮ”rG231.7 kJ/mol
K0.26 ร— 10โˆ’40
pK40.59
CuSCNIonized aqueous solution + 8HNO3Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
CuSO4Crystalline solid + 9NO2โ†‘Gas + CO2โ†‘Un-ionized aqueous solution + 4H2โ†‘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
607.4231.73339โ€“
607.4231.73339โ€“
per 1 mol of
75.9228.96417.4โ€“
per 1 mol of
607.4231.73339โ€“
per 1 mol of
67.4925.74371.0โ€“
per 1 mol of
607.4231.73339โ€“
per 1 mol of
151.857.92834.8โ€“

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
CuSCN (cr)โ€“69.9[1]โ€“โ€“
CuSCN (ai)148.11[1]142.69[1]184.9[1]โ€“
HNO3 (l)-174.10[1]-80.71[1]155.60[1]109.87[1]
HNO3 (g)-135.06[1]-74.72[1]266.38[1]53.35[1]
HNO3 (ai)-207.36[1]-111.25[1]146.4[1]-86.6[1]
HNO3 (l)
1 hydrate
-473.46[1]-328.77[1]216.90[1]182.46[1]
HNO3 (l)
3 hydrate
-1056.04[1]-811.09[1]346.98[1]325.14[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (l):Liquid, (g):Gas

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
CuSO4 (cr)-771.36[1]-661.8[1]109[1]100.0[1]
CuSO4 (ai)-844.50[1]-679.04[1]-79.5[1]โ€“
CuSO4 (ao)โ€“-692.18[1]โ€“โ€“
CuSO4 (cr)
1 hydrate
-1085.83[1]-918.11[1]146.0[1]134[1]
CuSO4 (cr)
3 hydrate
-1684.31[1]-1399.96[1]221.3[1]205[1]
CuSO4 (cr)
5 hydrate
-2279.65[1]-1879.745[1]300.4[1]280[1]
NO2 (g)33.18[1]51.31[1]240.06[1]37.20[1]
CO2 (g)-393.509[1]-394.359[1]213.74[1]37.11[1]
CO2 (ao)-413.80[1]-385.98[1]117.6[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, (ao):Un-ionized aqueous solution, (g):Gas

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)