Redox Reactions...

For the redox reaction, $$Zn+Cu^{2+}_{(0.1M)}\rightarrow Zn^{2+}_{(1M)}+Cu$$ taking place in a cell $$E^{\ominus}_{cell}=1.10$$V. $$E^{\ominus}_{Cell}$$ for the galvanic cell will be?

In the reaction $$4Fe+3O_2\rightarrow 4Fe^{3+}+6O^{2-}$$ which of the following statements is incorrect?

When zinc reacts with very dilute $$HNO_3$$, the oxidation state of nitrogen changes from:

Given:
$$X Na_2 HAsO_3+Y NaBrO_3+ZHCl\rightarrow NaBr+H_3AsO_4+NaCl$$
The values of $$X, \ Y$$ and $$Z$$ in the given redox reaction are respectively.

Calculate the equilibrium constant for the redox reaction at $$25^o$$C, $$Sr_{(s)}+Mg^{2+}_{(aq)}\rightarrow Sr^{2+}_{(aq)}+Mg_{(s)}$$, that occurs in a galvanic cell. $$E^o_{{Mg^{2+}}/{Mg}}=-2.37$$V and $$E^o_{{Sr}^2+/Sr}=-2.89$$V.

Two oxidation states for chlorine are found in the compound:

Oxidation state of cobalt in $$[{ Co }(NH_{ 3 }{ ) }_{ 4 } ({ H }_{ 2 }O)Cl]{ SO }_{ 4 }$$ ?

Oxidation number of $$Fe$$ in $${ Fe }_{ 3 }{ O }_{ 4 }$$ are:

In which of the following pair oxidation number of $$Fe$$ is same:

The oxidation number of C in $${ CH }_{ 4 }, { CH }_{ 3 }Cl, { CH }_{ 2 }Cl_{ 2 }, { CH }Cl_{ 3 }$$ and $$CCl_{ 4 }$$ are respectively :