Aqueous solution of a salt (A) forms a dense white precipitate with BaCl2 solution. The precipitate dissolves in dilute HCl to produce a gas (B) which decolourises acidified KMnO4 solution A and B respectively are :

Question

Aqueous solution of a salt (A) forms a dense white precipitate with BaCl2 solution. The precipitate dissolves in dilute HCl to produce a gas (B) which decolourises acidified KMnO4 solution A and B respectively are : (A) BaSO3, SO2 (B) BaSO4, H2S (C) BaSO3, H2S (D) BaSO4, SO2

Tardigrade Admin · Accepted Answer

The corresponding reactions are BaCl 2+ Na 2 SO 3 arrow BaSO 3+2 NaCl BaSO 3+2 HCl arrow BaCl 2+ SO 2+ H 2 O Salt A is Na 2 SO 3 and the dense white precipitate is BaSO 3 (Barium sulfite). Gas B is SO 2. It decolourises acidified KMnO 4 solution because of its reducing nature. The corresponding reaction is: 2 KMnO 4+5 SO 2+2 H 2 O arrow K 2 SO 4+2 MnSO 4+2 H 2 SO 4

Q. Aqueous solution of a salt $(A)$ forms a dense white precipitate with $B a C l_{2}$ solution. The precipitate dissolves in dilute $H Cl$ to produce a gas $(B)$ which decolourises acidified $K M n O_{4}$ solution
$A$ and $B$ respectively are :

$B a S O_{3}, S O_{2}$

$B a S O_{4}, H_{2} S$

$B a S O_{3}, H_{2} S$

$B a S O_{4}, S O_{2}$

Q. Aqueous solution of a salt (A) forms a dense white precipitate with BaCl2​ solution. The precipitate dissolves in dilute HCl to produce a gas (B) which decolourises acidified KMnO4​ solution A and B respectively are :

BaSO3​,SO2​

BaSO4​,H2​S

BaSO3​,H2​S

BaSO4​,SO2​

Q. Aqueous solution of a salt $(A)$ forms a dense white precipitate with $B a C l_{2}$ solution. The precipitate dissolves in dilute $H Cl$ to produce a gas $(B)$ which decolourises acidified $K M n O_{4}$ solution
$A$ and $B$ respectively are :

$B a S O_{3}, S O_{2}$

$B a S O_{4}, H_{2} S$

$B a S O_{3}, H_{2} S$

$B a S O_{4}, S O_{2}$