Practise

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2730 questions · page 102 of 137 · choose a topic above to narrow them down

SA-AC-AM-0031 markL2 StandardCalculatorNitriles

Hydrolysis of butanenitrile with dilute HCl under reflux gives

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SA-AC-AM-0041 markL2 StandardCalculatorBasicity

Amines behave as bases because

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SA-AC-AM-0051 markL2 StandardCalculatorBasicity

Methylamine reacts with hydrochloric acid to form

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SA-AC-AN-0011 markL2 StandardCalculatorBasicity

Order of base strength (strongest first):

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SA-AC-AN-0021 markL2 StandardCalculatorBasicity

Phenylamine is a weaker base than ammonia because

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SA-AC-AN-0031 markL2 StandardCalculatorPhenylamine and azo

Nitrobenzene is reduced to phenylamine using

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SA-AC-AN-0041 markL2 StandardCalculatorPhenylamine and azo

Diazotisation of phenylamine requires

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SA-AC-AN-0051 markL2 StandardCalculatorPhenylamine and azo

Benzenediazonium chloride couples with phenol in alkaline solution to give

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SA-AC-AP-0021 markL2 StandardCalculatorRepeat units

The repeat unit of PVC is

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SA-AC-AP-0031 markL2 StandardCalculatorRepeat units

A polymer has repeat unit

\mathrm{-[CF_2-CF_2]-}

. Its monomer is

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SA-AC-AP-0042 marksL2 StandardCalculatorRepeat units

A sample of poly(ethene) has

M_r=1.40\times10^5

. How many ethene monomers (

M_r=28

) are in a chain?

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SA-AC-AP-0051 markL2 StandardCalculatorDisposal

Poly(alkenes) are non-biodegradable because

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SA-AC-AQ-0021 markL2 StandardCalculatorWith OH⁻ and NH₃

Which hydroxide dissolves in excess NaOH?

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SA-AC-AQ-0031 markL2 StandardCalculatorWith OH⁻ and NH₃

Excess NH₃(aq) added to copper(II) hydroxide gives

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SA-AC-AQ-0041 markL2 StandardCalculatorWith OH⁻ and NH₃

The green precipitate from Fe²⁺ and NaOH turns brown on standing because

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SA-AC-AQ-0051 markL2 StandardCalculatorAcidity

[Al(H₂O)₆]³⁺ is more acidic than [Mg(H₂O)₆]²⁺ because Al³⁺

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SA-AC-AR-0021 markL2 StandardCalculatorSubstitution

The electrophile in nitration of benzene is

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SA-AC-AR-0031 markL2 StandardCalculatorSubstitution

Nitration of benzene requires

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SA-AC-AR-0042 marksL2 StandardCalculatorStructure

Enthalpy of hydrogenation of cyclohexene is −120 kJ mol⁻¹ and of benzene −208 kJ mol⁻¹. By how much (kJ mol⁻¹) is benzene more stable than the Kekulé structure?

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SA-AC-AR-0051 markL2 StandardCalculatorStructure

Evidence that benzene doesn't have alternating single and double bonds:

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