zgribestika

2022-01-15

Arrange these species by their ability to act as an oxidizing agent.

Best oxidizing agent

Poorest oxidizing agent

$N{i}^{2+},\text{}M{g}^{2+},\text{}Z{n}^{2+},\text{}A{u}^{3+}$

Best oxidizing agent

Poorest oxidizing agent

censoratojk

Beginner2022-01-16Added 46 answers

Step 1

Given ionic species:

$N{i}^{2+},\text{}M{g}^{2+},\text{}Z{n}^{2+},\text{}A{u}^{3+}$

Step 2

From the standard reduction potential data

$N{i}^{2+}+2{e}^{-}\Rightarrow Ni$

${E}^{\circ}=-0.26v$

$M{g}^{2+}+2{e}^{-}\Rightarrow Mg$

${E}^{\circ}=-2.37v$

$Z{n}^{2+}+2{e}^{-}\Rightarrow Zn$

${E}^{-}=-0.76v$

$A{u}^{3+}+3{e}^{-}\Rightarrow Au$

${E}^{\circ}=1.40v$

Reduction potential more act as strong oxidining agent means it

Can take electrons from less reducetion potentid species

Based on this: best oxiding agent is$A{u}^{3+}$

Poor oxiding agent:$M{g}^{2+}$

Oxidizing agent Capacity increasing order$M{g}^{2+}<Z{n}^{2+}<N{i}^{2+}<A{u}^{3+}$

Best oxidizing agent

$A{u}^{3+}$

$N{i}^{2+}$

$Z{n}^{2+}$
Poor oxigizing agent $M{g}^{2+}$

Given ionic species:

Step 2

From the standard reduction potential data

Reduction potential more act as strong oxidining agent means it

Can take electrons from less reducetion potentid species

Based on this: best oxiding agent is

Poor oxiding agent:

Oxidizing agent Capacity increasing order

Best oxidizing agent

jgardner33v4

Beginner2022-01-17Added 35 answers

Solution:

$N{i}^{2+}+2{e}^{-}\Rightarrow Ni\text{}{E}^{0}=-0.26v$

$Z{n}^{2+}+2{e}^{-}\Rightarrow Zn\text{}{E}^{0}=-0.76v$

$M{g}^{2+}+2{e}^{-}\Rightarrow Mg\text{}{E}^{0}=-2.37v$

$A{u}^{3+}+3{e}^{-}\Rightarrow Au\text{}{E}^{0}=1.40v$

Oxidizing agent capacity increasing order:

$M{g}^{2+}<Z{n}^{2+}<N{i}^{2+}<A{u}^{3+}$

Oxidizing agent capacity increasing order:

alenahelenash

Skilled2022-01-23Added 366 answers

Solution
from given:
then $(1x+5)=(4x+1)$ $\{\text{the qualioy of parallelegram}\}$
$-1x=-4$
$x=2$
then $PQ=2x+5=2\times 2+5=9cm$