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From stoichiometry: 2 mol HI produced for every 1 mol ( H_2 ) used. If 1.56 mol HI formed → ( H_2 ) used = ( \frac1.562 = 0.78 ) mol. chemsheets 1232 answers
Practice naming and drawing the structures for the first few members of the series: cap C sub 2 cap H sub 4 cap C sub 3 cap H sub 6 cap C sub 4 cap H sub 8 cap C sub 5 cap H sub 1 0 Unsaturation: Explanation of the C=C double bond , which makes alkenes more reactive than alkanes. Key Reactions and Mechanisms You can also post your working (not just
Alkenes are a homologous series of that contain at least one carbon-to-carbon double bond ( Practice naming and drawing the structures for the
). This double bond is their functional group and is responsible for their high chemical reactivity compared to alkanes. The general formula for alkenes is CnH2ncap C sub n cap H sub 2 n end-sub Key Examples: Common alkenes include ethene ( C2H4cap C sub 2 cap H sub 4 ), propene ( C3H6cap C sub 3 cap H sub 6 ), and butene ( C4H8cap C sub 4 cap H sub 8
Chemsheets GCSE 1232 worksheet focuses on , a homologous series of unsaturated hydrocarbons. This resource is widely used by students following the AQA, OCR, and Edexcel curricula to master the fundamental properties and reactions of these organic compounds. Core Content Overview The worksheet typically covers the following key concepts: General Formula: Students must identify the general formula for alkenes as Molecular and Displayed Formulas:
: While alkenes can burn, they often undergo incomplete combustion , resulting in a smoky flame.