Reactions of Alkenes (OCR A-Level Chemistry A): Quizzes

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Reactions of Alkenes
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What is the bond enthalpy of the pi bond in a C=C double bond?

265 kJ mol−1265 \text{ kJ mol}^{-1}

Why is the pi bond the reactive site in alkenes?

Pi electrons are more exposed & accessible

What conditions are required for hydrogenation of alkenes?

Ni catalyst, 423 K423 \text{ K}

How many H2\text{H}_2 molecules are needed to hydrogenate buta-1,3-diene completely?

2

What happens when bromine water is added to an alkene?

Orange colour decolourises

What conditions are required for halogenation of alkenes?

Room temperature

What products form when propene reacts with HCl?

1-chloropropane & 2-chloropropane

What reagents are needed for hydration of alkenes?

Steam & H3PO4\text{H}_3\text{PO}_4 catalyst

What type of product is formed when alkenes undergo hydration?

Alcohols

Which industrial process uses hydrogenation of alkenes?

Margarine production from vegetable oils

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Basic Concepts of Organic Chemistry

Alkanes

Alkenes

Alcohols

Haloalkanes

Organic Synthesis

Spectroscopy

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Basic Concepts of Organic Chemistry

Alkanes

Alkenes

Alcohols

Haloalkanes

Organic Synthesis

Spectroscopy

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Basic Concepts of Organic Chemistry

Alkanes

Alkenes

Alcohols

Haloalkanes

Organic Synthesis

Spectroscopy

Explore OCR A-Level Chemistry A Exam Questions by Topics

Basic Concepts of Organic Chemistry

Alkanes

Alkenes

Alcohols

Haloalkanes

Organic Synthesis

Spectroscopy

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