CBSE Class 10 Answered
if 10ml of H2SO4is mixed with 10ml.of mg(OH)2 of the same concentration, what is the colour of the universal indicator
Asked by jayant_abraham | 04 Mar, 2020, 21:59: PM
Sulphuric acid produces two H+ ions on dissociation.
![straight H subscript 2 SO subscript 4 space rightwards arrow over leftwards arrow with blank on top space 2 straight H to the power of plus space plus space SO subscript 4 superscript 2 minus end superscript](https://images.topperlearning.com/topper/tinymce/cache/cfe44b4ecf5fdb721d689cad4bc792ff.png)
whereas, Magnesium hyroxide also produces two ions of hydroxide ion on dissociation.
![Mg left parenthesis OH right parenthesis subscript 2 space stack rightwards arrow over leftwards arrow with blank on top space Mg to the power of 2 plus end exponent space plus space 2 HO subscript blank superscript minus](https://images.topperlearning.com/topper/tinymce/cache/2c0cdb1bfac772731cff40e8315ca63b.png)
When equal volume of both solutions are mixed together they form water and salt by neutralisation reaction as one is acid and other is base.
![space 2 straight H to the power of plus space plus space SO subscript 4 superscript 2 minus end superscript plus space Mg to the power of 2 plus end exponent space plus space 2 OH to the power of minus space rightwards arrow with blank on top space space 2 straight H subscript 2 straight O space plus space MgSO subscript 4 superscript blank](https://images.topperlearning.com/topper/tinymce/cache/9996a60290a7c7b014ff097b1ca3351d.png)
Therefore, for neutral solution universal indicator shows green colour.
Answered by Ramandeep | 05 Mar, 2020, 18:44: PM
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