37342
Which of the following substances are soluble in concentrated \(HN{O_3}\)
1 \(HgS\)
2 \(CuS\)
3 \(PbS\)
4 All of the above
Explanation:
\(CuS, PbS, HgS\) substances are soluble in concentrated \(HNO _3\).
PRACTICAL CHEMISTRY
37343
Which of the following cannot give iodometric titrations
1 \(F{e^{3 + }}\)
2 \(C{u^{2 + }}\)
3 \(P{b^{2 + }}\)
4 \(A{g^{2 + }}\)
Explanation:
Atom in highest oxidation state can oxidize iodide to liberate \(I _2\) which is volumetrically measured by iodometric titration using hypo. \(2 I ^{-} \rightarrow I _2\) \(Pb ^{+2} \rightarrow\) Lowest oxidation state can not oxidise iodide to \(I _2\).
PRACTICAL CHEMISTRY
37344
Which of the following mixture is chromic acid
1 \(K_2Cr_2O_7\) and \(HCl\)
2 \(K_2SO_4\) and conc. \(H_2SO_4\)
3 \(K_2Cr_2O_7\) and conc. \(H_2SO_4\)
4 \(H_2SO_4\) and \(HCl\)
Explanation:
(c) \(({\rm{Conc}}{\rm{.}}\,{H_2}S{O_4} + {K_2}C{r_2}{O_7})\) mixture is called as chromic acid.
PRACTICAL CHEMISTRY
37345
If \(N{a^ + }\) ion and \({S^{2 - }}\) ion is larger than \(C{l^ - }\) ion, which of the following will be least soluble in water
37342
Which of the following substances are soluble in concentrated \(HN{O_3}\)
1 \(HgS\)
2 \(CuS\)
3 \(PbS\)
4 All of the above
Explanation:
\(CuS, PbS, HgS\) substances are soluble in concentrated \(HNO _3\).
PRACTICAL CHEMISTRY
37343
Which of the following cannot give iodometric titrations
1 \(F{e^{3 + }}\)
2 \(C{u^{2 + }}\)
3 \(P{b^{2 + }}\)
4 \(A{g^{2 + }}\)
Explanation:
Atom in highest oxidation state can oxidize iodide to liberate \(I _2\) which is volumetrically measured by iodometric titration using hypo. \(2 I ^{-} \rightarrow I _2\) \(Pb ^{+2} \rightarrow\) Lowest oxidation state can not oxidise iodide to \(I _2\).
PRACTICAL CHEMISTRY
37344
Which of the following mixture is chromic acid
1 \(K_2Cr_2O_7\) and \(HCl\)
2 \(K_2SO_4\) and conc. \(H_2SO_4\)
3 \(K_2Cr_2O_7\) and conc. \(H_2SO_4\)
4 \(H_2SO_4\) and \(HCl\)
Explanation:
(c) \(({\rm{Conc}}{\rm{.}}\,{H_2}S{O_4} + {K_2}C{r_2}{O_7})\) mixture is called as chromic acid.
PRACTICAL CHEMISTRY
37345
If \(N{a^ + }\) ion and \({S^{2 - }}\) ion is larger than \(C{l^ - }\) ion, which of the following will be least soluble in water
37342
Which of the following substances are soluble in concentrated \(HN{O_3}\)
1 \(HgS\)
2 \(CuS\)
3 \(PbS\)
4 All of the above
Explanation:
\(CuS, PbS, HgS\) substances are soluble in concentrated \(HNO _3\).
PRACTICAL CHEMISTRY
37343
Which of the following cannot give iodometric titrations
1 \(F{e^{3 + }}\)
2 \(C{u^{2 + }}\)
3 \(P{b^{2 + }}\)
4 \(A{g^{2 + }}\)
Explanation:
Atom in highest oxidation state can oxidize iodide to liberate \(I _2\) which is volumetrically measured by iodometric titration using hypo. \(2 I ^{-} \rightarrow I _2\) \(Pb ^{+2} \rightarrow\) Lowest oxidation state can not oxidise iodide to \(I _2\).
PRACTICAL CHEMISTRY
37344
Which of the following mixture is chromic acid
1 \(K_2Cr_2O_7\) and \(HCl\)
2 \(K_2SO_4\) and conc. \(H_2SO_4\)
3 \(K_2Cr_2O_7\) and conc. \(H_2SO_4\)
4 \(H_2SO_4\) and \(HCl\)
Explanation:
(c) \(({\rm{Conc}}{\rm{.}}\,{H_2}S{O_4} + {K_2}C{r_2}{O_7})\) mixture is called as chromic acid.
PRACTICAL CHEMISTRY
37345
If \(N{a^ + }\) ion and \({S^{2 - }}\) ion is larger than \(C{l^ - }\) ion, which of the following will be least soluble in water
37342
Which of the following substances are soluble in concentrated \(HN{O_3}\)
1 \(HgS\)
2 \(CuS\)
3 \(PbS\)
4 All of the above
Explanation:
\(CuS, PbS, HgS\) substances are soluble in concentrated \(HNO _3\).
PRACTICAL CHEMISTRY
37343
Which of the following cannot give iodometric titrations
1 \(F{e^{3 + }}\)
2 \(C{u^{2 + }}\)
3 \(P{b^{2 + }}\)
4 \(A{g^{2 + }}\)
Explanation:
Atom in highest oxidation state can oxidize iodide to liberate \(I _2\) which is volumetrically measured by iodometric titration using hypo. \(2 I ^{-} \rightarrow I _2\) \(Pb ^{+2} \rightarrow\) Lowest oxidation state can not oxidise iodide to \(I _2\).
PRACTICAL CHEMISTRY
37344
Which of the following mixture is chromic acid
1 \(K_2Cr_2O_7\) and \(HCl\)
2 \(K_2SO_4\) and conc. \(H_2SO_4\)
3 \(K_2Cr_2O_7\) and conc. \(H_2SO_4\)
4 \(H_2SO_4\) and \(HCl\)
Explanation:
(c) \(({\rm{Conc}}{\rm{.}}\,{H_2}S{O_4} + {K_2}C{r_2}{O_7})\) mixture is called as chromic acid.
PRACTICAL CHEMISTRY
37345
If \(N{a^ + }\) ion and \({S^{2 - }}\) ion is larger than \(C{l^ - }\) ion, which of the following will be least soluble in water
