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calcium

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Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Deltafgas177.8 ± 0.8kJ/molReviewCox, Wagman, et al., 1984CODATA Review value
Deltafgas177.80kJ/molReviewChase, 1998Data last reviewed in September, 1983
Quantity Value Units Method Reference Comment
gas,1 bar154.887 ± 0.004J/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar154.89J/mol*KReviewChase, 1998Data last reviewed in September, 1983

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 1774. - 6000.
A 121.5470
B -74.95390
C 19.17230
D -1.400821
E -64.51340
F 42.23540
G 217.4470
H 177.8000
ReferenceChase, 1998
Comment Data last reviewed in September, 1983

Condensed phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Deltafliquid7.79kJ/molReviewChase, 1998Data last reviewed in September, 1983
Quantity Value Units Method Reference Comment
liquid,1 bar45.51J/mol*KReviewChase, 1998Data last reviewed in September, 1983
Quantity Value Units Method Reference Comment
solid,1 bar41.59 ± 0.40J/mol*KReviewCox, Wagman, et al., 1984CODATA Review value

Liquid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 1115. - 1773.658
A 35.00004
B 1.119602×10-10
C -8.292981×10-11
D 1.878880×10-11
E 1.912569×10-12
F -2.646946
G 87.86609
H 7.788015
ReferenceChase, 1998
Comment Data last reviewed in September, 1983

Solid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1100.298. - 716.716. - 1115.
A 19.7751711.11735-40.63785
B 10.1081338.52364126.7765
C 14.50338-8.891419-69.73891
D -5.529491-9.61830517.93162
E 0.1780310.3918505.409494
F -5.862997-2.56350324.49192
G 62.9160647.71852-15.67297
H 0.0000001.0560011.056001
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment «alpha» phase; Data last reviewed in September, 1983 «beta» phase; Data last reviewed in September, 1983 «beta» phase; Data last reviewed in September, 1983

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director

Quantity Value Units Method Reference Comment
Tboil1757.KN/AHonig and Kramer, 1969Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Ttriple1112.9KN/AHonig and Kramer, 1969Uncertainty assigned by TRC = 2. K; TRC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
1254. - 1712.2.784733121.368-594.591Hartmann and Schneider, 1929Coefficents calculated by NIST from author's data.

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

(CAS Reg. No. 56977-48-1 bullet 4294967295calcium) + calcium = CAS Reg. No. 56977-48-1

By formula: (CAS Reg. No. 56977-48-1 bullet 4294967295Ca) + Ca = CAS Reg. No. 56977-48-1

Quantity Value Units Method Reference Comment
Deltar183. ± 6.3kJ/molN/ARackwitz, Feldman, et al., 1977gas phase

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Honig and Kramer, 1969
Honig, R.E.; Kramer, D.A., Vapor pressure data for the solid and liquid elements, RCA Rev., 1969, 1969, 285. [all data]

Hartmann and Schneider, 1929
Hartmann, H.; Schneider, R., Die Siedetemperaturen von Magnesium, Calcium, Strontium, Barium and Lithium, Z. Anorg. Allg. Chem., 1929, 180, 1, 275-283, https://doi.org/10.1002/zaac.19291800129 . [all data]

Rackwitz, Feldman, et al., 1977
Rackwitz, R.; Feldman, D.; Kaiser, H.J.; Heincke, E., Photodetachment bei einigen zweiatomigen negativen hydridionen: BeH-, MgH-, CaH-, ZnH-, PH-, AsH-, Z. Naturforsch. A:, 1977, 32, 594. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References