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Obtain the relationship between freezing point depression of a solution containing nonvolatile-nonelectrolyte solute and its molar mass.
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A 5% aqueous solution (by mass) of cane sugar (molar mass 342 g mol-1) has a freezing point of 271 K. Calculate the freezing point of 5% aqueous glucose solution.
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Answer the following in one or two sentences.
What is enthalpy of fusion?
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Answer in brief.
What is the enthalpy of atomization? Give an example.
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It is impossible to measure the potential of a single electrode. Comment.
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Answer the following.
What is the action of chlorine on Fe?
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How is hydrogen chloride prepared from sodium chloride?
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What is the action of hydrochloric acid on NH3?
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What is the action of hydrochloric acid on Na2CO3?
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Answer the following.
Give two uses of HCl.
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Give uses of KMnO4
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On the basis of CFT predict the number of unpaired electrons in [CrF6]3-.
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What are the high-spin complexes?
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Answer in brief.
[CoCl4]2− is a tetrahedral complex. Draw its box orbital diagram. State which orbitals participate in hybridization.
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[CoCl4]2- is a tetrahedral complex. Draw its box orbital diagram. State which orbitals participate in hybridization.
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What are strong field and weak field ligands ? Give one example of each.
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With the help of the crystal field, the energy-level diagram explains why the complex [Cr(en)3]3⊕ is coloured.
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Answer the following question.
Give valence bond description for the bonding in the complex [VCl4]-. Draw box diagrams for the free metal ion. Which hybrid orbitals are used by the metal? State the number of unpaired electrons.
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Draw a qualitatively energy-level diagram showing d-orbital splitting in the octahedral environment. Predict the number of unpaired electrons in the complex [Fe(CN)6]4-. Is the complex diamagnetic or paramagnetic? Is it coloured? Explain.
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Answer in brief.
Formic acid is stronger than acetic acid. Explain.
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