With the aid of equation show; how sodium reacts with water? – NABTEB QUESTION

1) How sodium reacts with water
2) What happens when water is added drop by drop to quick lime
3) The amphoteric property of aluminum.

SOLUTION

i. 2Na(s) + 2H2O(l) → 2NaOH(aq) +H2(g)

ii. CaO(s) + H2O(l) → Ca(OH)2(s)

iii. 2Al(s) + 6HCl(aq) → 2AlCl3(aq) +3H2(g)

OR

2Al(s) + 6H2SO4(aq) → Al2(SO4)3(aq) + 6H2O(l) + 3SO2(g)

2AI(s) +2NaOH(aq) +6H2O(l) → 2NaAl(OH)4 (aq) +3H2(g).