1 Answer
Solution :-
F2 can oxidize \( Cl^{ – } \;to\; Cl_{ 2 }, Br^{ – }\; to\; Br_{ 2 },\; and\; I^{ – } to\; I_{ 2 }\) as:
_1638301487.bmp)
But, \( Cl_{ 2 }, Br_{ 2 },\; and\; I_{ 2 }\) cannot oxidize \( F^{ – }\; to\; F_{ 2 }\).
The oxidizing power of halogens increases in the order as given below:
\( I_{ 2 }< Br_{ 2 }< Cl_{ 2 }
Therefore, fluorine is the best oxidant among halogens.
HI and HBr can reduce \( H_{ 2 }SO_{ 4 }\) to \( SO_{ 2 }\), but HCI and HF cannot.
Hence, HI and HBr are stronger reductants compared to HCl and HF.
\( H_2 SO_4\) can be converted to SO using HI and HBr , but not with HCl or HF. HI and
HBr are thus more effective reductants than HCl and HF
_1638301537.bmp)
Therefore, hydrochloric acid is the best reductant among hydrohalic compounds.
Hence, the reducing power of hydrohalic acids increases as given below:
HF< HCl< HBr
Related Questions
Fluorine reacts with ice and results in the change:
\( H_{ 2 }O_{ (s) } \; + \; F_{ 2 \; (g) } \; \rightarrow \; HF_{ (g) } \; + \; HOF_{ (g) } \)
Justify that this reaction is a redox reaction
Depict the galvanic cell in which the reaction is:
\( Zn_{\left ( s \right )} \;+ \;2 \;Ag_{\left ( aq \right )}^{+} \;\rightarrow \;Zn^{2+}_{\left ( aq \right )} \;+ \;2 \;Ag_{\left ( s \right )} \)
Further show:
(i) which of the electrode is negatively charged?
(ii) the carriers of the current in the cell.
(iii) individual reaction at each electrode.
Given the standard electrode potentials,
\( \dfrac{ K^{+}}{K}\)= –2.93V
\( \dfrac{ Ag^{+}}{Ag}\) = 0.80V
\( \dfrac{Hg^{2+}}{Hg}\) = 0.79V
\(\dfrac{ Mg^{2+}}{Mg}\) = –2.37V
\(\dfrac{Cr^{3+}}{Cr}\) = –0.74V
Arrange these metals in their increasing order of reducing power.
Arrange the given metals in the order in which they displace each other from the solution of their salts.
Al, Fe, Cu, Zn, Mg
Predict the products of electrolysis in each of the following:
(i) An aqueous solution of \( AgNO_{3}\) with silver electrodes
(ii) An aqueous solution \( AgNO_{3}\) with platinum electrodes
(iii) A dilute solution of \( H_{2}SO_{4}\) with platinum electrodes
(iv) An aqueous solution of \( CuCl_{2}\)with platinum electrodes.