Question

plzzzzzz......solve it fast

Answer 1

Answer:

1) magnesium ribbon should be cleaned before burning in air because a layer of MgO magnesium oxide will deposit on the ribbon which cannot help ribbon to burn completely. so this should be cleaned before burning.

2) i) 2H + Cl2 = 2HCl

ii) 3BaCl2 + 2 Al2(SO4)3= 3BaSO4+ 4AlCl3

iii) 2Na+ 2H2O= 2NAOH +H2

hope this answer useful to you

Answer 2

Answer (2) :

(i) $H_{2}(g) + Cl_{2}(g) \longrightarrow 2HCl (l)$

(ii) $3BaCl_{2} (aq) + Al_{2} (SO_{4})_{3} (aq) \longrightarrow 3BaSO_{4} (s) + 2AlCl_{3}(aq)$

(iii) $2Na(s) + 2H_{2}O (l) \longrightarrow 2NaOH (aq) + H_{2}(g)$

Answer (3) :

(i) $BaCl_{2} (aq) + Na_{2} SO_{4} (aq) \longrightarrow BaSO_{4} \downarrow +2NaCl (aq)$

(ii) $NaOH(aq) + HCl(aq) \longrightarrow NaCl (aq) + H_{2}O(l)$