For the following questions answer them individually
For the following reaction
the rate of reaction is $$\frac{d[P]}{dt} = k[X]$$. Two moles of X are mixed with one mole of Y to make 1.0 L of solution. At 50 s, 0.5 mole of Y is left in the reaction mixture. The correct statement(s) about the reaction is(are)
(Use: ln 2 = 0.693)
Some standard electrode potentials at 298 K are given below:
Pb$$^{2+}$$/Pb -0.13 V
Ni$$^{2+}$$/Ni -0.24 V
Cd$$^{2+}$$/Cd -0.40 V
Fe$$^{2+}$$/Fe -0.44 V
To a solution containing 0.001 M of X$$^{2+}$$ and 0.1 M of Y$$^{2+}$$, the metal rods X and Y are inserted (at 298 K) and connected by a conducting wire. This resulted in dissolution of X. The correct combination(s) of X and Y, respectively, is(are)
(Given: Gas constant, R = 8.314 J K$$^{-1}$$ mol$$^{-1}$$, Faraday constant, F = 96500 C mol$$^{-1}$$)
The pair(s) of complexes wherein both exhibit tetrahedral geometry is(are)
(Note: py = pyridine
Given: Atomic numbers of Fe, Co, Ni and Cu are 26, 27, 28 and 29, respectively)
The correct statement(s) related to oxoacids of phosphorous is(are)
Question Stem
At 298 K, the limiting molar conductivity of a weak monobasic acid is $$4 \times 10^2 S cm^2 mol^{-1}$$. At 298 K, for an aqueous solution of the acid the degree of dissociation is $$\alpha$$ and the molar conductivity is $$𝐲 \times 10^2 S cm^2 mol^{-1}$$. At 298 K, upon 20 times dilution with water, the molar conductivity of the solution becomes $$3𝐲 \times 10^2 S cm^2 mol^{-1}$$.
The value of $$\alpha$$ is ___.
The value of y is ___.
Question Stem
Reaction of x g of Sn with HCl quantitatively produced a salt. Entire amount of the salt reacted with y g of nitrobenzene in the presence of required amount of HCl to produce 1.29 g of an organic salt (quantitatively).
(Use Molar masses (in g mol$$^{-1}$$) of H, C, N, O, Cl and Sn as 1, 12, 14, 16, 35 and 119, respectively).
The value of x is _________.
The value of y is _________.
Question Stem
A sample (5.6 g) containing iron is completely dissolved in cold dilute HCl to prepare a 250 mL of solution. Titration of 25.0 mL of this solution requires 12.5 mL of 0.03 M $$KMnO_4$$ solution to reach the end point. Number of moles of Fe$$^{2+}$$ present in 250 mL solution is $$x \times 10^{−2}$$ (consider complete dissolution of $$FeCl_2$$). The amount of iron present in the sample is y% by weight.
(Assume: $$KMnO_4$$ reacts only with Fe$$^{2+}$$ in the solution
Use: Molar mass of iron as 56 g mol$$^{−1}$$)
The value of x is _________.
The value of y is _________.