Calcium

From NOWA-CL
Revision as of 10:55, 20 June 2019 by JeffEvarts (talk | contribs) (Created page with "{{Compound|name=Calcium|chemf=Ca|density=1.55|num=20|stp_p=solid|group=Alkali Earth Metals|mm=40.1|mp=842|bp=1484|nfpa_h=3|nfpa_f=1|nfpa_r=2|nfpa_o=<s>W</s>}} Elemental Calciu...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
 
Calcium
Chemical formula Ca
Atomic Number 20 
OTP appearance solid 
Molar Mass(g/mol) 40.1 
Melting Point(°C) 842 
Boiling Point(°C) 1484 
Density(g/cc) 1.55
NFPA 704
NFPA704.png
1
3
2
W

Elemental Calcium is rarely required. Normally it is used in a reduced state.

Uses

Justification Questioned

  • Many calcium compounds are used in this experiment

Natural occurrence

Production

Extraction

Electrolysis of calcium chloride

  1. Produce calcium chloride from calcium ores by combining them with hydrochloric acid
    CaCO3 + 2 HCl CaCl2 + H2O
  2. Electrolyze at 775°C, 100V
    CaCl2
    {
    775°C 100V}
    Ca + Cl2

From halides

  1. by halide stripping with sodium[1]
    CaI2 + 2 Na 2 NaI + Ca

See Also

References

  1. Mellor, Joseph William (1912) "Modern Inorganic Chemistry"
    Longmans, Green, and Co