The following reaction does not proceed to a product: h2o + ag --> no reaction. why is that?

a) the reaction proceeds too slowly too create products.

b) the reaction cannot occur because water is reactant.

c) silver has a higher activity than hydrogen and cannot replace it.

d) silver has a lower activity than hydrogen and cannot replace it.

D - Silver has lower reactivity than hydrogen and cannot replace it

Explanation:

If we assume , Ag also reacts just like other metals as

                   Metal + H₂O ---> Metal Hydroxide + H₂

         then Ag forms as

                     Ag + H2O ----->AgOH + H2

           here Ag is converting into Ag⁺ and 2H⁺ are converting into H₂  

             for reaction Ag --->Ag⁺ + e⁻      E° = -0.799 V

             for reaction H⁺ + e⁻ ---->H₂   E° = 0 V

     by Adding those 2 above equations net E° will be -0.799 which is negative.As per Faradays Law

                                   ΔG° = -nFE°

     here we got E° as negative then ΔG° will be positive

As per thermodynamics if ΔG° is +ve then reaction is not feasible

so, then given reaction does not occur.....

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.