[thedy]

What is the princip of production Rb from RbCl by Ca?I don t understand why element,which is more left from Ca in electronpotential series,is reduced.

Thanks

[AWK]

Vapours of rubidium are removed from reaction mixture.

[thedy]

Vapours of rubidium are removed from reaction mixture.

Thanks,but I still don t understand.But how we get vapours of Rb?
We have Rb+ +Cl-,and we get Rb+ + 1e---->Rb.And Rb is more electropositive atom than Ca,isn it?So,it cannot be reduced.
Thanks

[billnotgatez]

source
Bentor, Yinon. Chemical Element.com - Rubidium. Mar. 4, 2012 <http://www.chemicalelements.com/elements/rb.html>.
Bentor, Yinon. Chemical Element.com - Calcium. Mar. 4, 2012 <http://www.chemicalelements.com/elements/ca.html>.


Name: Rubidium
Symbol: Rb
Atomic Number: 37
Atomic Mass: 85.4678 amu
Melting Point: 38.89 °C (312.04 K, 102.002 °F)
Boiling Point: 688.0 °C (961.15 K, 1270.4 °F)
Number of Protons/Electrons: 37
Number of Neutrons: 48
Classification: Alkali Metal
Crystal Structure: Cubic
Density @ 293 K: 1.532 g/cm3
Color: silver

Name: Calcium
Symbol: Ca
Atomic Number: 20
Atomic Mass: 40.078 amu
Melting Point: 839.0 °C (1112.15 K, 1542.2 °F)
Boiling Point: 1484.0 °C (1757.15 K, 2703.2 °F)
Number of Protons/Electrons: 20
Number of Neutrons: 20
Classification: Alkaline Earth
Crystal Structure: Cubic
Density @ 293 K: 1.55 g/cm3
Color: Silvery