Alkynes Knowledge Quest

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Fundamental facts about alkynes

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husna haziqah

Malaysia

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Froggy Jumps Alkynes Knowledge QuestVersion en ligne Fundamental facts about alkynes par husna haziqah 1 What is the defining feature of alkynes? a A carbon–carbon single bond b A benzene ring structure c A carbon–carbon triple bond 2 What is the general molecular formula for acyclic alkynes (CnH2n-2)? a CnH2n-4 b CnH2n+2 c CnH2n-2 3 What is the common name for ethyne? a Ethyne b Acetylene c Propyne 4 Are terminal alkynes more acidic than most hydrocarbons? a Yes, they have relatively acidic C≡C-H protons b They are non-acidic like alkanes c No, they are extremely basic 5 What suffix is used for the name of alkynes? a -ane b -yne c -ene 6 Which is a correct example of a terminal alkyne? a Ethynyl chloride b 1-butyne c 2-pentyne 7 Which reaction adds water across the triple bond to form a ketone after rearrangement? a Hydrohalogenation with HCl b Hydrogenation by Pt catalyst c Mercury(II) sulfate-catalyzed hydration 8 What is the product of complete hydrogenation of an alkyne? a An alkane b Another alkyne c A cycloalkane 9 Hydrohalogenation of acetylene (ethyne) usually gives which product? a Alcohols only b Benzenes c Ethylidenes or ethyl halides depending on reagents 10 Which statement about internal alkynes is true? a They always are gases b They are always aromatic c They have no terminal C–H bond 11 What is the typical product of adding halogens (X2) to an alkyne? a Dihaloalkyne b Tetrahalide (dihaloalkene then tetrahaloalkane) c Monohaloalkane

Froggy Jumps

Alkynes Knowledge QuestVersion en ligne

Fundamental facts about alkynes

par husna haziqah

What is the defining feature of alkynes?

A carbon–carbon single bond

A benzene ring structure

A carbon–carbon triple bond

What is the general molecular formula for acyclic alkynes (CnH2n-2)?

CnH2n-4

CnH2n+2

CnH2n-2

What is the common name for ethyne?

Ethyne

Acetylene

Propyne

Are terminal alkynes more acidic than most hydrocarbons?

Yes, they have relatively acidic C≡C-H protons

They are non-acidic like alkanes

No, they are extremely basic

What suffix is used for the name of alkynes?

-ane

-yne

-ene

Which is a correct example of a terminal alkyne?

Ethynyl chloride

1-butyne

2-pentyne

Which reaction adds water across the triple bond to form a ketone after rearrangement?

Hydrohalogenation with HCl

Hydrogenation by Pt catalyst

Mercury(II) sulfate-catalyzed hydration

What is the product of complete hydrogenation of an alkyne?

An alkane

Another alkyne

A cycloalkane

Hydrohalogenation of acetylene (ethyne) usually gives which product?

Alcohols only

Benzenes

Ethylidenes or ethyl halides depending on reagents

Which statement about internal alkynes is true?

They always are gases

They are always aromatic

They have no terminal C–H bond

What is the typical product of adding halogens (X2) to an alkyne?

Dihaloalkyne

Tetrahalide (dihaloalkene then tetrahaloalkane)

Monohaloalkane

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Alkynes Knowledge Quest

Froggy Jumps

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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Alkynes Knowledge QuestVersion en ligne

par husna haziqah

What is the defining feature of alkynes?

What is the general molecular formula for acyclic alkynes (CnH2n-2)?

What is the common name for ethyne?

Are terminal alkynes more acidic than most hydrocarbons?

What suffix is used for the name of alkynes?

Which is a correct example of a terminal alkyne?

Which reaction adds water across the triple bond to form a ketone after rearrangement?

What is the product of complete hydrogenation of an alkyne?

Hydrohalogenation of acetylene (ethyne) usually gives which product?

Which statement about internal alkynes is true?

What is the typical product of adding halogens (X2) to an alkyne?

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