tr Print Icalculator MPeriodio Table uestion 25 of 26 Sapling Learning A d octah
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tr Print Icalculator MPeriodio Table uestion 25 of 26 Sapling Learning A d octahedral complex is found to absorb visible light, with the absorption maximum occurring at nm. Calculate the crystal-field splitting energy, A, in kJmol. kJ mol the complex has a formula or M Hzoor", at effect would replacing the 6 aqua with 6 cr ligands have on A? ligands O Awill increase O A will remain constant O A will decrease Previous Check Answer about us careen partners privacy policy terms of use contact us helpExplanation / Answer
A d1 octahedral complex is found to absorb visible light, with the absorption maximum occurring at 501nm.
a) Calculate the crystal-field splitting energy, ? , in kJ/mo
o = E = h for each individual molecule.
c = , so = c/. Therefore
o = hc/ = 6.626 * 10^-34 [J.s] * 3.0 * 10^8 [m/s] / 501 * 10^-9 [m] =
=3.9676647e-19
=3.9 * 10^-19 J or 3.9 * 10^-22 kJ
To get this in terms of kJ per mol you need to multiply by the Avagadro number.
= 3.9 * 10^-22 * 6.022 * 10^23 ~ 235 kJ/mol
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If the complex has a formula of [M(H2O)2]3+ WHAT EFFECT WOULD REPALCING the 6 aqua ligands with 6 cl-
delta will increase-answer
delta will decrease
delta will remain constant
As the nuclear charge on the metal increases. the metal orbitals are drawn to lower energies.
Hence the MLCT bands should increase in energy.
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