Electrochemistr...

A gas $$X$$ at $$1\ atm$$ is bubbled through a solution containing a mixture of $$1\ M$$ $${ Y }^{ - }$$ and $$1\ M$$ $${ Z }^{ - }$$ ions at $$25^{\circ} C$$. If the reduction potential of $$Z > Y > X$$, then _____________.

Standard reduction potentials of the half reactions are given below
$$\displaystyle F_{2(g)} + 2e^- \rightarrow 2F^{-}_{(aq)}$$;       $$E^o = +2.85V$$
$$\displaystyle Cl_{2(g)} + 2e^- \rightarrow 2Cl^{-}_{(aq)}$$;       $$E^o = +1.36V$$
$$\displaystyle Br_{2(l)} + 2e^- \rightarrow 2Br^{-}_{(aq)}$$;       $$E^o = +1.06V$$
$$\displaystyle I_{2(s)} + 2e^- \rightarrow 2I^{-}_{(aq)}$$;       $$E^o = +0.53V$$
The strongest oxidising and reducing agents respectively are:

Four faradays of electricity were passed through $${AgNO}_3$$, $${CdSO}_4$$, $${AICI}_3$$ and $${PbCI}_4$$ kept in four vessels using insert electrodes. The ratio of moles of Ag, Cd, AI and Pb deposited will be ?

The time required for a current of 3 ampere to decompose electrolytically 18 g of $$H_{2}O$$ is:

The time required to produce $$2F$$ of electricity with current of 2.5 amperes is:

Which of the following is not essential for rust to form?

Question No.60
Indicate the wrong statement according to Valence bond theory:

Spacecraft like the satellites that circle the earth and are used in television transmission have electric batteries that supply power for various purposes. These batteries contain ion-exchange resins instead of a liquid electrolyte solution because:

Which of the following metals has been used for building boats because it has resistance to corrosion by sea water?

Read the passage given below and answer the question:
Chemical reactions involve the interactions of atoms and molecules. A large number of atoms/molecules (approximately $$6.023 \times 10^{23}$$) are present in few grams of any chemical compound varying with their atomic/molecular masses. To handle such large numbers conveniently, the mole concept was introduced. This concept has implications in diverse areas such as analytical chemistry,  biochemistry, electrochemistry, and radiochemistry. the following example illustrates a typical case, involving chemical/electrochemical reaction, which requires a clear understanding of the mole concept.
A 4.0 molar aqueous solution of NaCl is prepared and 500 mL of this solution is electrolyzed. This leads to the evolution of chlorine gas at one of the electrodes (atomic mass: Na = 23, Hg = 200; 1 faraday =96500 coulombs). 
The total charge (coulombs) required for complete electrolysis is: