Hydrogen family

Question 1

Photochemical water-splitting reaction:

Answer 1

2 H2O(l) → 2 H2(g) + O2(g)

Question 2

Industrial production of hydrogen:

Answer 2

CH4(g) + H2O(g) → CO(g) +3 H2(g)
CO(g) + H2O(g) → CO2(g) + H2(g)

Question 3

Production of hydrogen in laboratory:

Answer 3

Zn(s) + 2 H+(aq) → Zn2+(aq) + H2(g)
Zn + 2 HCl → ZnCl2 + H2

Question 4

Reaction of hydrogen with 1st group metal:

Answer 4

2 M(s) + H2(g) → 2 MH(s)

Question 5

Reaction of hydrogen with 2nd group metals (except Be)

Answer 5

M(s) + H2(g) → MH2(s)

Question 6

Reaction of hydrogen with some d-metal:

Answer 6

2 M(s) + x H2(g) → 2 MHx(s)

Question 7

Reaction of hydrogen with oxygen

Answer 7

O2(g) + 2 H2(g) → 2 H2O(l)

Question 8

Reaction of hydrogen with nitrogen:

Answer 8

N2(g) + 3 H2(g) → 2 NH3(g)

Question 9

Reaction of hydrogen with halogens (X2)

Answer 9

X2(g,l,s) + H2(g) → 2 HX(g)

Question 10

Reaction of hydride ion with water:

Answer 10

NaH(s) + H2O(l) → NaOH(aq) + H2(g)