Number of specie(s) that can oxidize "A" into a precipitate among the following
(i) $K M n O_{4} (H^{+})$
(ii) $K M n O_{4} (O H^{-})$
(iii) $F e C l_{3}$
(iv) $H_{2} O_{2} (H^{+})$
(v) $K_{2} C r_{2} O_{7} (O H^{-})$
(vi) $d i l . H_{2} S O_{4}$
(vii) $P b (N O_{3})_{2}$

Question

Number of specie(s) that can oxidize "A" into a precipitate among the following

(i) $K M n O_{4} (H^{+})$

(ii) $K M n O_{4} (O H^{-})$

(iii) $F e C l_{3}$

(iv) $H_{2} O_{2} (H^{+})$

(v) $K_{2} C r_{2} O_{7} (O H^{-})$

(vi) $d i l . H_{2} S O_{4}$

(vii) $P b (N O_{3})_{2}$

TestHub · Accepted Answer

Na₂SO₄ + C Δ ​ Na₂S So, A = N a 2 ​ S . In basic medium, S O 4 2 − ​ is formed. P b ( N O 3 ​ ) 2 ​ forms black ppt of PbS. dil. acids will form H 2 ​ S

Chemistry - Salt Analysis Question with Solution | TestHub

Doubts & Discussion

JEE Advanced 2027 (Class 12+)