Coordination Chemistry Exam Prep
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Coordination Chemistry Exam Prep
English 11 leveled MCQs Free
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5 marks Long answer
Discuss the geometry and magnetic character of the following coordination complex on the basis of Valence Bond Theory (VBT) i. $[Fe(CN)_6]^{4-}$ ii. $[CoF_6]^{3-}$ OR $[Co(NH_3)_6]^{3+}$ is an inner orbital complex whereas $[Ni(NH_3)_6]^{2+}$ is an outer orbital complex.
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Discuss geometry and magnetic properties based on VBT.
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5 marks Long answer
Write down the steps for the preparation of: i. $ ext{K}_2 ext{Cr}_2 ext{O}_7$ from chromite ore. ii. $ ext{KMnO}_4$ from pyrolusite ore.
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Steps for synthesizing K₂Cr₂O₇ and KMnO₄ from respective ores.
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5 marks Long answer
Complete the following chemical equations and write the names of their main products- i. $ ext{CH}_3 ext{CH(Br)} ext{CH}_2 ext{CH}_3 \xrightarrow{ ext{NaOH}} ext{A} \xrightarrow{ ext{SN1}}$ ii. $ ext{CH}_3 ext{CH}_2 ext{CH}_2 ext{Br} + ext{AgCN} \longrightarrow$ iii. $ ext{C}_6 ext{H}_5 ext{NH}_2 \xrightarrow{ ext{NaNO}_2 + ext{HCl}} ext{A} \xrightarrow{ ext{Cu}} ext{B}$ iv. $ ext{CH}_3 ext{CH}_2 ext{Br} + ext{AgNO}_2 \longrightarrow$
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Complete equations with products and their names.
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4 marks Medium answer
Draw a labelled diagram of a galvanic cell. Write the equation of chemical reaction taking place on it.
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Galvanic cell diagram with oxidation and reduction half-reactions.
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4 marks Medium answer
Draw a labelled diagram of Standard Hydrogen Electrode. Write the equation of chemical reaction taking place on it.
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SHE diagram with 2H⁺ + 2e⁻ ⇌ H₂.
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4 marks Medium answer
Explain the following reactions. i. Sandmeyer's Reaction ii. Finkelstein reaction.
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Explain mechanisms and outcomes of Sandmeyer's and Finkelstein reactions.
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4 marks Medium answer
Which of the two theories is better for explaining the color of coordination compounds? Justify your answer.
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CFT is better for explaining color due to d-orbital splitting.
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2 marks Short answer
Differentiate between order and molecularity of a reaction.
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Order is the sum of powers of concentration terms; molecularity is the number of reactant molecules involved.
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2 marks Short answer
What is a pseudo first-order reaction? Give one example.
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A reaction that appears to be first-order due to one reactant being in large excess; e.g., ester hydrolysis.
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2 marks Short answer
According to VBT, what type of hybridization and geometry would be expected for $[Fe(CN)_6]^{4-}$?
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d²sp³ hybridization with octahedral geometry.
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2 marks Short answer
Explain why $[Fe(H_2O)_6]^{2+}$ is paramagnetic while $[Fe(CN)_6]^{4-}$ is diamagnetic, even though both have the same central metal ion in the same oxidation state.
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Paramagnetism due to unpaired electrons in $[Fe(H_2O)_6]^{2+}$; $[Fe(CN)_6]^{4-}$ has all paired electrons.
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