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प्रश्न
Complete the following equations : 2 MnO2 + 4 KOH + O2 →
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उत्तर
2 MnO2 + 4 KOH + O2 → 2 K2MnO4 + 2 H2O
संबंधित प्रश्न
Complete the following equations:
Complete the following equation :
`2MnO_4^(-)+6H^++5NO_2^(-)rarr`
Complete the following equations : 2 Na2CrO4 + 2 H + →
Name the oxometal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.
E0 value for Mn3+ Mn2+ couple is much more positive than that for Cr3-/ Cr2-.
Using IUPAC norms, write the formula of potassium trioxalatochromate(III).
In the form of dichromate, \[\ce{Cr (VI)}\] is a strong oxidising agent in acidic medium but \[\ce{Mo (VI)}\] in \[\ce{MoO3}\] \[\ce{and W (VI)}\] in \[\ce{WO3}\] are not because:
(i) \[\ce{Cr(VI)}\] is more stable than \[\ce{Mo(VI)}\] and \[\ce{and W(VI)}\].
(ii) \[\ce{Mo(VI)}\] and \[\ce{and W(VI)}\] are more stable than \[\ce{Cr(VI)}\].
(iii) Higher oxidation states of heavier members of group-6 of transition series are more stable.
(iv) Lower oxidation states of heavier members of group-6 of transition series are more stable.
The product formed upon heating methyl bromide with potassium tert-butoxide is
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chomite ore.
Indicate the step in the preparation of K2Cr2O7 from chromite ore.
