Concept explainers
Interpretation:
Thecolors of the given complex compounds are to be determined.
Concept introduction:
Sunlight comprises all thecolors. The objects reflecting all these colors appear white and the objects absorbing all these colors appear black. Any object that absorbs all colors but reflects a particular color is said to possess that color.
The color in coordination compounds can be explained on the basis of crystal field splitting energy by using the expression below:
Here,
The color of a complex compound is the same as the magnitude of the energy of a photon of visible light. The
Spectrochemical series:
These ligands are arranged in order of increasing value of
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Chemistry
- Bu/mod/quiz/attempt.php?attempt%=D468069&cmid%3D433047 G Google Play Settings O y www.yahoo.com • Remind * Blumen Online BLSAMP Page B CSTEP Pag In the complex ion [Cr(C204)2(H20)2], the oxidation number of Cr is Select one: O A. -2. O B. -1. OC+1 O D. +3. O E. 12. Which of the following statements about entropy is true? Select one: O a. The entiupy of a suhstance increasea with a cecrease in the mamber of moles. O h. The entropy of a subatance will increase on gong frem a solid to a liquid to a gas OC. The entronv of am uhstance inereases 15 tha temmenalaneislowercd. arch F4 F5 F6 Fア F10 F8 F9 F11 F12 PrtScr %24 & 8. E R T Y D F G H J C V B N M Alt Ctrlarrow_forwardHW-4-24.pdf 1. Write the formula for each complex ion (please do not DRAW it) 1A. hexaamminechromium(III) 1B. hexacyanidoferrate(III) 1C. tetraaquaplatinum(II) 1D. hexachloridoplatinate(IV) 1E. hexaaquanickel(II) aomnound:arrow_forward1. Which two species will be able to oxidize Pb(s)? Co³⁺ and Ce³⁺ Ca and Cr Cd²⁺ and Cl₂ Cr and Cu None of the given. 2. Which species will NOT be able to reduce PbO₂(s) to PbSO₄(s)? Cl₂ Cr Cu Ce³⁺ None of the given.arrow_forward
- 7. Consider the following complexes and enter the requested numbers in (a) and (b): Bu "Bu PMes PMe, -CI PMes PMe, ос, „CH3 но, Me Me H oc "Br Br čo čo CH, 'Bu ČN A D E (a) Count electrons around the metal in each complex and enter the numbers in the corresponding lines. An = Click or tap here to enter text. B. n = Click or tap here to enter text. C, n = Click or tap here to enter text. D. n = Click or tap here to enter text. E,n = Click or tap here to enter text.arrow_forwardAlthough KOH, RÜOH, and CSOH have little association between metal and hydroxide in aqueous solution, Lit and Na+ do form complexes with OH : [LIOH(aq)] Lit + OH- = LIOH(aq) K1 [Li*][OH¯] = 0.83 [NAOH(aq)] Na+ + OH NaOH(aq) K1 = [Na+ ][OH¯] = 0.20 Prepare a table showing initial and final concentrations of Lit, OH¯, and LIOH(aq) in 1.00 F LIOH solution. Calculate the fraction of lithium in the form LİOH(aq) at equilibrium. fraction as LIOH(aq):arrow_forwardThis is the lab with my data sheet and please answer all of them. Thank you My data to support answers for questions. The equilibrium is Fe3+ + SCN- <--> [FeSCN]2+. The Fe3+ is a pale yellow colour and the complex ion product is red.Stresses:Add KSCN - turned deep redAdd Fe(NO3)3 - turned deep redAdd Na2CO3 - turned yellow/colourlessAdd NaOH - turned yellow/colourlessAdd NH3 - turned yellow/colourlessHeat - turned lighter orange colourCold - turned darker orange colour What species is responsible for the observed colour change when KSCN(aq) and Fe(NO3)3(aq) are mixed? What can be concluded about the system based on your ~1 minute observation of the mixture. what does the addition of the solid do to the [SCN-(aq)]? What can you infer about the system from the colour change of the solution? How can this be possible if no additional Fe3+(aq) has been introduced?arrow_forward
- This is the lab with my data sheet and please answer all of them. Thank you My data to support answers for questions. The equilibrium is Fe3+ + SCN- <--> [FeSCN]2+. The Fe3+ is a pale yellow colour and the complex ion product is red.Stresses:Add KSCN - turned deep redAdd Fe(NO3)3 - turned deep redAdd Na2CO3 - turned yellow/colourlessAdd NaOH - turned yellow/colourlessAdd NH3 - turned yellow/colourlessHeat - turned lighter orange colourCold - turned darker orange colour question: What can you infer about the system from the colour change of the solution? How can this be possible if no additional Fe3+(aq) has been introduced? What does the addition of the solution do to the [Fe3+(aq)]?arrow_forwardThe Kf (complex formation constant) of [Ag(en)₂*] > is 5.0x107. The standard reduction potential Eº Ag+/Ag is +0.800 V. • What is the Eº Ag(en)2*/Ag--the standard reduction potential of the silver complex to Agº at 298.15 K? • Use F= 96485 units, R= 8.3145 J/mol K. • Write answer in 2 (Two) significant figures. example if answer is -0.22334 V then you should write -0.22arrow_forward[Cd(CN)4] complex K₁=6.03 × 10¹8 at 25 °C. x Suppose equal volumes of 0.0086M Cd (NO3), solution and 0.18M KCN solution are mixed. Calculate the equilibrium molarity of aqueous Cd²+ ion. For the aqueous Round your answer to 2 significant digits.arrow_forward
- Three bottles of aqueous solutions are discovered in an aban- doned lab. The solutions are green, yellow, and purple. It is known that three complex ions of chromium(III) were commonly used in that lab: [Cr(H,O),J*, [Cr(NH,)*, and [Cr(H,0),Cl]*. Determine the likely identity of each of the col- ored solutions.arrow_forwardHow many unpaired electrons do you expect each complex ion to have? a. (Cr(CN),J b. (MnF (Ru(en),2+ c.arrow_forward[Ni(H2O)6]2+ Three peaks are observed at 9000, 14500, 24500 cm-1 in the UV-Vis spectrum. What is the crystal field stability energy of this complex in kJ/mol? (Ni:28) (h=6.625.10-34Js; c=3.108m/s; 1kJ/mol =83.6 cm-1) A. -293 B. -108 C. -129 D. -211 E. -352arrow_forward
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