Which of the following reactions does not inv | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) To determine if a reaction involves oxidation or reduction,we check the oxidation states of the elements involved:$I.$ $Cs$ changes from $0$ to $+

Vedclass · Accepted Answer

$III, IV$

Vedclass · Answer

(D) To determine if a reaction involves oxidation or reduction,we check the oxidation states of the elements involved:$I.$ $Cs$ changes from $0$ to $+1$ (oxidation),and $H$ in $H_2O$ changes from $+1$ to $0$ (reduction). This is a redox reaction.$II.$ $Cu$ changes from $+2$ to $+1$ (reduction),and $I$ changes from $-1$ to $0$ (oxidation). This is a redox reaction.$III.$ $NH_4Br + KOH 	o KBr + NH_3 + H_2O$. The oxidation states are: $N(-3), H(+1), Br(-1), K(+1), O(-2)$. There is no change in oxidation states for any element. This is an acid-base neutralization reaction,not a redox reaction.$IV.$ $4KCN + Fe(CN)_2 	o K_4[Fe(CN)_6]$. This is a complex formation reaction. The oxidation state of $Fe$ remains $+2$ and all other elements remain in their respective oxidation states. This is not a redox reaction.Therefore,reactions $III$ and $IV$ do not involve oxidation or reduction.

Which of the following reactions does not involve either oxidation or reduction?
$I. \ 2Cs + 2H_2O \to 2CsOH + H_2$
$II. \ 2CuI_2 \to 2CuI + I_2$
$III. \ NH_4Br + KOH \to KBr + NH_3 + H_2O$
$IV. \ 4KCN + Fe(CN)_2 \to K_4[Fe(CN)_6]$

Similar Questions

Which of the following reactions are correct? (Ignore balancing of the reactions)
$(I)$ $Al + NaOH \xrightarrow{\Delta} NaAlO_2 + H_2$
$(II)$ $P_4 + NaOH + H_2O \to NaH_2PO_2 + PH_3$
$(III)$ $S + NaOH \to Na_2S_2O_3 + Na_2S + H_2O$

In neutral or faintly alkaline medium,$MnO_4^{-}$ oxidizes $I^{-}$ to iodate. What is the number of moles of $KMnO_4$ required to completely convert $1 \ L$ of $0.5 \ M \ KI$ to iodate?

Assign $A, B, C, D$ from the given type of reaction: $2NaNO_3 + H_2SO_4(conc.) \xrightarrow{Hot} Na_2SO_4 + 2NO_2 + \frac{1}{2}O_2 + H_2O$. (Note: The reaction is a thermal decomposition redox reaction).

Assign $A, B, C, D$ from the given type of reaction.
$ZnSO_4 \, (aq) + MgCl_2 \, (aq) \longrightarrow$ No reaction

In acidic medium, one mole each of $MnO_4^-$ and $Cr_2O_7^{2-}$ is reduced by $x$ and $y$ moles of ferrous ions $(Fe^{2+})$ respectively. The sum of $x$ and $y$ is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Which of the following reactions does not involve either oxidation or reduction?$I. \ 2Cs + 2H_2O \to 2CsOH + H_2$$II. \ 2CuI_2 \to 2CuI + I_2$$III. \ NH_4Br + KOH \to KBr + NH_3 + H_2O$$IV. \ 4KCN + Fe(CN)_2 \to K_4[Fe(CN)_6]$