28822
An aqueous solution of \(CoC{l_2}\) on addition of excess of concentrated \( HCl \) turns blue due to formation of
1 \([Co{({H_2}O)_4}C{l_2}]\)
2 \({[Co({H_2}O)_2C{l_4}]^{2 - }}\)
3 \({[CoC{l_4}]^{2 - }}\)
4 \([Co({H_2}O)_2C{l_2}]\)
Explanation:
(c)\(CoCl_2\) is a weak Lewis acid, reacting with chloride ion to produce salt containing the tetrahedral \([CoCl_4]^{2-}\) ion. \(CoCl_2\) is blue when anhydrous, and a deep magneta colour when hydrated, for this reason it is widely used as an indicator for water.
COORDINATION COMPOUNDS
28823
The correct order for the wavelength of absorption in the visible region is
(a)The absorption of energy or the observation of colour in a complex transition compound depends on the charge of the metal ion and the nature of the ligands attached. The same metal ion with different ligands shows different absorption depending upon the type of ligand. The presence of weak field ligands make the central metal ion to absorb low energies i.e., of higher wavelength. The field strength of ligands can be obtained from spectrochemical series. i.e. (weak field) \( I^-< Br^-< S^{2-} < Cl^-< NO^{3-} < F^-< OH^-< H_2O < NH_3 < NO_2^-< CN^-< CO\) (strong field)
COORDINATION COMPOUNDS
28824
In which of the following pairs both the complexes show optical isomerism
28822
An aqueous solution of \(CoC{l_2}\) on addition of excess of concentrated \( HCl \) turns blue due to formation of
1 \([Co{({H_2}O)_4}C{l_2}]\)
2 \({[Co({H_2}O)_2C{l_4}]^{2 - }}\)
3 \({[CoC{l_4}]^{2 - }}\)
4 \([Co({H_2}O)_2C{l_2}]\)
Explanation:
(c)\(CoCl_2\) is a weak Lewis acid, reacting with chloride ion to produce salt containing the tetrahedral \([CoCl_4]^{2-}\) ion. \(CoCl_2\) is blue when anhydrous, and a deep magneta colour when hydrated, for this reason it is widely used as an indicator for water.
COORDINATION COMPOUNDS
28823
The correct order for the wavelength of absorption in the visible region is
(a)The absorption of energy or the observation of colour in a complex transition compound depends on the charge of the metal ion and the nature of the ligands attached. The same metal ion with different ligands shows different absorption depending upon the type of ligand. The presence of weak field ligands make the central metal ion to absorb low energies i.e., of higher wavelength. The field strength of ligands can be obtained from spectrochemical series. i.e. (weak field) \( I^-< Br^-< S^{2-} < Cl^-< NO^{3-} < F^-< OH^-< H_2O < NH_3 < NO_2^-< CN^-< CO\) (strong field)
COORDINATION COMPOUNDS
28824
In which of the following pairs both the complexes show optical isomerism
28822
An aqueous solution of \(CoC{l_2}\) on addition of excess of concentrated \( HCl \) turns blue due to formation of
1 \([Co{({H_2}O)_4}C{l_2}]\)
2 \({[Co({H_2}O)_2C{l_4}]^{2 - }}\)
3 \({[CoC{l_4}]^{2 - }}\)
4 \([Co({H_2}O)_2C{l_2}]\)
Explanation:
(c)\(CoCl_2\) is a weak Lewis acid, reacting with chloride ion to produce salt containing the tetrahedral \([CoCl_4]^{2-}\) ion. \(CoCl_2\) is blue when anhydrous, and a deep magneta colour when hydrated, for this reason it is widely used as an indicator for water.
COORDINATION COMPOUNDS
28823
The correct order for the wavelength of absorption in the visible region is
(a)The absorption of energy or the observation of colour in a complex transition compound depends on the charge of the metal ion and the nature of the ligands attached. The same metal ion with different ligands shows different absorption depending upon the type of ligand. The presence of weak field ligands make the central metal ion to absorb low energies i.e., of higher wavelength. The field strength of ligands can be obtained from spectrochemical series. i.e. (weak field) \( I^-< Br^-< S^{2-} < Cl^-< NO^{3-} < F^-< OH^-< H_2O < NH_3 < NO_2^-< CN^-< CO\) (strong field)
COORDINATION COMPOUNDS
28824
In which of the following pairs both the complexes show optical isomerism
28822
An aqueous solution of \(CoC{l_2}\) on addition of excess of concentrated \( HCl \) turns blue due to formation of
1 \([Co{({H_2}O)_4}C{l_2}]\)
2 \({[Co({H_2}O)_2C{l_4}]^{2 - }}\)
3 \({[CoC{l_4}]^{2 - }}\)
4 \([Co({H_2}O)_2C{l_2}]\)
Explanation:
(c)\(CoCl_2\) is a weak Lewis acid, reacting with chloride ion to produce salt containing the tetrahedral \([CoCl_4]^{2-}\) ion. \(CoCl_2\) is blue when anhydrous, and a deep magneta colour when hydrated, for this reason it is widely used as an indicator for water.
COORDINATION COMPOUNDS
28823
The correct order for the wavelength of absorption in the visible region is
(a)The absorption of energy or the observation of colour in a complex transition compound depends on the charge of the metal ion and the nature of the ligands attached. The same metal ion with different ligands shows different absorption depending upon the type of ligand. The presence of weak field ligands make the central metal ion to absorb low energies i.e., of higher wavelength. The field strength of ligands can be obtained from spectrochemical series. i.e. (weak field) \( I^-< Br^-< S^{2-} < Cl^-< NO^{3-} < F^-< OH^-< H_2O < NH_3 < NO_2^-< CN^-< CO\) (strong field)
COORDINATION COMPOUNDS
28824
In which of the following pairs both the complexes show optical isomerism
28822
An aqueous solution of \(CoC{l_2}\) on addition of excess of concentrated \( HCl \) turns blue due to formation of
1 \([Co{({H_2}O)_4}C{l_2}]\)
2 \({[Co({H_2}O)_2C{l_4}]^{2 - }}\)
3 \({[CoC{l_4}]^{2 - }}\)
4 \([Co({H_2}O)_2C{l_2}]\)
Explanation:
(c)\(CoCl_2\) is a weak Lewis acid, reacting with chloride ion to produce salt containing the tetrahedral \([CoCl_4]^{2-}\) ion. \(CoCl_2\) is blue when anhydrous, and a deep magneta colour when hydrated, for this reason it is widely used as an indicator for water.
COORDINATION COMPOUNDS
28823
The correct order for the wavelength of absorption in the visible region is
(a)The absorption of energy or the observation of colour in a complex transition compound depends on the charge of the metal ion and the nature of the ligands attached. The same metal ion with different ligands shows different absorption depending upon the type of ligand. The presence of weak field ligands make the central metal ion to absorb low energies i.e., of higher wavelength. The field strength of ligands can be obtained from spectrochemical series. i.e. (weak field) \( I^-< Br^-< S^{2-} < Cl^-< NO^{3-} < F^-< OH^-< H_2O < NH_3 < NO_2^-< CN^-< CO\) (strong field)
COORDINATION COMPOUNDS
28824
In which of the following pairs both the complexes show optical isomerism
