Adding powdered lead and iron to a solution that is 1.0 M in both… - Vidyadip

MCQ

Adding powdered lead and iron to a solution that is $1.0 M$ in both $P{b^{2 + }}$and $F{e^{2 + }}$ions, would result a reaction, in which

A
More iron and $P{b^{2 + }}$ions are formed
✓
More lead and $F{e^{2 + }}$ions are formed
C
Concentration of both $P{b^{2 + }}$and $F{e^{2 + }}$ions increases
D
There is no net change

✓

Answer

Correct option: B.

More lead and $F{e^{2 + }}$ions are formed

b
The standard reduction potential of $Pb ^{-2} \mid Pb$ electrode is $-0.126 \,V$ which less negative than the standard reduction potential of $Fe ^{2+} \mid Fe$ electrode which is $-0.44 \,V$

Hence, $Pb ^{2+}$ ions are reduced to $Pb$ and $Fe$ is oxidized to $Fe ^{2+}$.

Adding powdered $Pb$ and $Fe$ to a solution containing $1\, M$ each of $Pb ^{2+}$ and $Fe ^{2+}$ ions would result in the formation of more of $Pb$ and $Fe ^{2+}$ ions.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The increasing order of the acidity of the $\alpha$$-$hydrogen of the following compounds is :

“The position and velocity of a small particle like electron cannot be simultaneously determined.” This statement is

The dissociation constant of a weak acid is $1 \times 10^{-4}.$ In order to prepare a buffer solution with a $pH = 5,$ the $[Salt]/[Acid]$ ratio should be

Correct reactivity order of following compound towards alkaline hydrolysis is:-

Consider the following reaction for which the change in enthalpy is positive

$2 A ( g ) + B ( g ) \rightleftharpoons C ( g )+ D ( g )$

Which of the following will not affect the equilibrium?

The number of molecules/ion/s having trigonal bipyramidal shape is ........ .

$\mathrm{PF}_5, \mathrm{BrF}_5, \mathrm{PCl}_5,\left[\mathrm{PtCl}_4\right]^{2-}, \mathrm{BF}_3, \mathrm{Fe}(\mathrm{CO})_5$

The products of hydrolysis of isohypophosphoric acid are same with that of which of the following compounds

Which of the following statement is not correct for the element having electronic configuration $1{s^2},2{s^2}{p^6},\,3{s^1}$

The main reason for larger number of oxidation states exhibited by the actinoids than the corresponding lanthanoids is

The $IUPAC$ name of following compound is