Question

Complete the following reactions

(i) Sn (s) + 2 NaOH (aq) + H2O (2) → ?

(ii) Fe (s) + XH2O + 3O2 → ?

(iii) Cu (s) + AgNO3 (aq) → ? + ? Hot

(iv) 2 HgS (s) + 3O2(g) −−−−→ ? + ?

Answer 1

1.Sn + 2NaOH + 4H2O =Na2[Sn(OH)6] + 2H2.

2.fe+hi+o2=fe2(oh).

3.cu(no3)2.

4.hgo+so2.

Answer 2

Completion of the given reaction

(i) $Sn+NaOH +H_2O$:

• The product formed due to the reaction of the given reactants are Sodium stannate and dihydrogen.
• The complete and balanced equation of the chemical reaction involved is as follows:

$Sn+2NaOH+H_2O\rightarrow Na_2SnO_3+2H_2$

(ii) $Fe+XH_2O+3O_2$

• The product formed due to the reaction of the given reactants is ferric oxyhydroxide.

• The complete and balanced equation of the chemical reaction involved is as follows:

$4Fe+6H_2O+3O_2\rightarrow 4Fe(OH)_3$

(iii) $Cu+AgNO_3$

• The product formed due to the reaction of the given reactants are copper (II) nitrate and silver.

• The complete and balanced equation of the chemical reaction involved is as follows:

$Cu+2AgNO_3\rightarrow Cu(NO_3)_2+2Ag$

(iv) $2HgS+3O_2$

• The product formed due to the reaction of the given reactants are mercury (II) oxide and sulfur dioxide.

• The complete and balanced equation of the chemical reaction involved is as follows:

$2HgS+3O_2\rightarrow 2HgO+2SO_2$

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