CBSE Class 12-science Answered
When conc H2SO4 is added to an unknown salt in a testube and MNO2 is added, a greenish yellow gas X comes out. To the unknown salt solution in water, when AGNO3 is added,a white ppt is formed which is insoluble in excess of NH4OH. X displaces a brown gas from aqueous solution of KBr. Identify X and write the equations involved
Asked by lekhakarthikeyan | 28 Aug, 2018, 03:49: AM
When conc H2SO4 is added to an unknown salt in a test tube and MNO2 is added, a greenish yellow gas X comes out.
The yellow chlorine gas is chlorine, so the salt must be XCl
![straight H subscript 2 SO subscript 4 space plus space MnO subscript 2 space plus space XCl space rightwards arrow with blank on top space 2 XHSO subscript 4 space plus space MnSO subscript 4 space plus space Cl subscript 2 space plus space 2 straight H subscript 2 straight O](https://images.topperlearning.com/topper/tinymce/cache/c9954a86ce4d2919762de1dfeaee0ba8.png)
To the unknown salt solution in water, when AgNO3 is added, a white ppt is formed which is insoluble in excess of NH4OH.
![XCl subscript open parentheses aq close parentheses end subscript space plus space AgNO subscript 3 space rightwards arrow with blank on top space AgCl space plus space XNO subscript 3](https://images.topperlearning.com/topper/tinymce/cache/dabb69d4587fce92f64f7cfaf3887f03.png)
X displaces a brown gas from the aqueous solution of KBr.
![KBr space plus space Cl subscript 2 space rightwards arrow with blank on top space KCl space plus space Br subscript 2](https://images.topperlearning.com/topper/tinymce/cache/38f7531eb8915394fb04bb8b2a645dc2.png)
X is Chlorine gas.
Answered by Varsha | 28 Aug, 2018, 16:04: PM
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