Hydrogen and its Compounds

IE order for F ,Cl, Br ,I , H

acidified KMnO4 (aq) + H2 ↑ -----> ?

acidified KMnO4 + Zn ----> ?

Lifetime of atomic Hydrogen is

• 1/2 s

• 1/3 s

• 1/4 s

• 1/5 s

Describe conc. of ortho and para Hydrogen at 0K and room temp.

Mg + HNO3 (conc.) --->

With which metal(s) does very dil. HNO3 give H2↑ ?

Mg + conc. H2SO4 ---->

Why can't conc. HCl be used to produce H2 ↑ ?

Can H2↑ be prepared from bases? How?

Describe the production of H2 ↑ using IA and IIA metals.