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प्रश्न
Complete the following chemical equations:
`(i) Cr_2O_7^(2-)+6Fe^(2+)+14H^+ ->`
`(ii) 2CrO_4^(2-)+2H^+ ->`
`(iii) 2MnO_4^-+5C_2O_4^(2-)+16H^+ ->`
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उत्तर
` (i)6Fe^(2+)+Cr_2O_7^(2-)+14H^+ -> 2Cr^(3+)+6Fe^(3+)+7H_2O`
(ii) 2CrO42- + 2H+ → Cr2O72- + H2O
(iii) 2MnO4- + 5C2O42- + 16H+ → 2Mn2+ + 10CO2 + 8H2O
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संबंधित प्रश्न
Account for the following:
E° value for the Mn3+/Mn2+ couple is much more positive than that for Cr3+/Cr2+.
How would you account for the following:
The d1 configuration is very unstable in ions.
Which of the following will not act as oxidising agents?
(i) \[\ce{CrO3}\]
(ii) \[\ce{MoO3}\]
(iii) \[\ce{WO3}\]
(iv) \[\ce{CrO^{2-}4}\]
Assertion (A): Cu cannot liberate hydrogen from acids.
Reason (R): Because it has positive electrode potential.
Match List - I with List - II.
| List - I | List - II | ||
| (A) | [Fe(CN)6]3− | (i) | 5.92 BM |
| (B) | [Fe(H2O)6]3+ | (ii) | 0 BM |
| (C) | [Fe(CN)6]4− | (iii) | 4.90 BM |
| (D) | [Fe(H2O)6]2+ | (iv) | 1.73 BM |
Choose the correct answer from the options given below.
The value of Δ0 for \[\ce{RhCl^{3-}6}\] is 243 KJ/mol which wavelength of light will promote an electron from. The colour of the complex is ______.
Which of the following ions acts as a typical transition metal ion?
Account for the following:
Copper has an exceptionally positive `"E"_("M"^(2+)//"M")^0` value.
Account for the following:
Zirconium (Zr) and Hafnium (Hf) are difficult to separate.
Give a reason for the following.
Some transition metals and their compounds get attracted towards the magnetic field.
