The correct option(s) to distinguish nitrate | vedclass

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

Question

(D) $1$. Flame test: Both $Mn^{2+}$ and $Cu^{2+}$ do not show a characteristic green flame color that distinguishes them uniquely in this context (oft

Vedclass · Accepted Answer

$B, D$

Vedclass · Answer

(D) $1$. Flame test: Both $Mn^{2+}$ and $Cu^{2+}$ do not show a characteristic green flame color that distinguishes them uniquely in this context (often $Cu^{2+}$ is associated with green,but $Mn^{2+}$ does not show a characteristic green flame). Thus,$(A)$ is incorrect.$2$. Precipitation with $H_2S$ in acidic medium: $CuS$ has a very low solubility product $(K_{sp})$,so it precipitates in acidic medium. $MnS$ has a higher $K_{sp}$ and does not precipitate in acidic medium. Thus,$(B)$ is correct.$3$. Precipitation with $H_2S$ in basic medium: Both $CuS$ and $MnS$ precipitate in basic medium. Thus,$(C)$ is incorrect.$4$. Reduction potential: The standard reduction potential $E^0$ for $Cu^{2+}/Cu$ $(+0.34 \ V)$ is higher than that of $Mn^{2+}/Mn$ $(-1.18 \ V)$. Thus,$(D)$ is correct.Therefore,the correct options are $(B)$ and $(D)$.

Similar Questions

Aqueous solution of Mohr's salt gives the test of which ions?

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$AlCl_3 + Na_3PO_4 \longrightarrow AlPO_4 \downarrow$

Given below are certain cations. Using inorganic qualitative analysis,arrange them in increasing group number from $0$ to $VI$.
$A. Al^{3+}$ $B. Cu^{2+}$
$C. Ba^{2+}$ $D. Co^{2+}$
$E. Mg^{2+}$
Choose the correct answer from the options given below:

To an aqueous solution containing ions such as $Al^{3+}, Zn^{2+}, Ca^{2+}, Fe^{3+}, Ni^{2+}, Ba^{2+}$ and $Cu^{2+}$,concentrated $HCl$ was added,followed by $H_{2}S$. The total number of cations precipitated during this reaction is/are:

What is the full form of $DMG$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module