SELECT * FROM question_mgmt as q WHERE id=1793 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=9 AND chapterId=58 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)
Consult the table of standard electrode potentials and suggest three substances that can oxidise ferrous ions under suitable conditions.
Substances that are stronger oxidising agents than ferrous ions can oxidise ferrous ions.
Fe2+ → Fe3+ + e-1 ; Eø = - 0.77 V
This implies that the substances having higher reduction potentials than +0.77 V can oxidise ferrous ions to ferric ions.
Three substances that can do so are F2, Cl2, and O2.
Vapour pressure of pure acetone and chloroform at 328 K are 741.8 mm Hg and 632.8 mm Hg respectively. Assuming that they form ideal solution over the entire range of composition, plot ptotal' pchloroform' and pacetoneas a function of xacetone. The experimental data observed for different compositions of mixture is.
100 ×xacetone |
0 | 11.8 | 23.4 | 36.0 | 50.8 | 58.2 | 64.5 | 72.1 |
pacetone /mm Hg |
0 | 54.9 | 110.1 | 202.4 | 322.7 | 405.9 | 454.1 | 521.1 |
pchloroform/mm Hg |
632.8 | 548.1 | 469.4 | 359.7 | 257.7 | 193.6 | 161.2 | 120.7 |
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