D block part2 Flashcards by Parul Diwan | Brainscape

Q

Which is more stable Cu2+ or Cu+

A

Cu2+ due to high -ve hydration enthalpy

despite ecf

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Q

Mn2O7 color and state

A

green oily liquid

highly explosive

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Q

HCl cannot be used in KMnO4 titrations because

A

KMnO4 oxidises HCl to Cl2, which is also an oxidising agent

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Q

Ce(SO4)2 is coloured due

A

LMCT

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Q

Interstitial compounds properties

A

Hard, retain metal conductivity, high MP, not very reactive

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Q

KMnO4 diff pH gets reduced to

A

Acidic: Mn2+
Basic: MnO42-
Neutral: MnO2

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Q

Zeigler Natta catalyst

A

TiCl4 + Al(CH3)3

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Q

Heat of atomisation is directly proportional to

A

No. of unpaired electrons

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Q

Most stable OS of Mn is

A

Mn2+

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Q

Most stable OS of Mn in oxides

A

+7

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Q

Prep of O2 from KClO3, catalyst?

A

MnO2

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Q

Misch metal is alloy of

A

Iron and lanthanoid

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Q

Trends in acidic character of Lanthanoid oxides

A

Increases from La to Lu

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Q

Stability of oxosalts of lanthanoids

A

Dec from La to Lu

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Q

Stability of complexes from La to Lu

A

Increases from La to Lu

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Q

Petroleum cracking reagent

A

Mixed oxides of Lanthanoids