Zadanie 29
Which equation shows the first species acting as an electrophile? A. Br− + CH3CH2+ → CH3CH2Br B. H2O + H+ → H3O+ C. CN− + CH3Br → CH3CN + Br− D. AlCl3 + Cl− → AlCl4−
Electrophiles
Define an electrophile as a species that accepts both bonding electrons from its reaction partner, and recognise neutral and positively charged electrophiles such as H+, NO2+, Br2 and HBr by their electron deficiency or polarizability.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2025–2026.
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Zadanie 29
Which compound is most susceptible to attack by an electrophile? A. Butane, CH3CH2CH2CH3 B. 1-Chlorobutane, CH3CH2CH2CH2Cl C. But-2-ene, CH3CH=CHCH3 D. Cyclohexane, C6H12
Zadanie 30
Which species is the electrophile in the reaction below? CH3CH2Cl + CN− → CH3CH2CN + Cl− A. CN− B. Cl− C. CH3CH2Cl D. CH3CH2CN
Zadanie 5a
(i) Write an equation for the homolytic fission of a bromine molecule under UV light, using curly arrows to show the movement of electrons. (ii) Under different conditions a bromine molecule can undergo heterolytic fission. Write an equation for this process,…
Zadanie 30
Which species can act as an electrophile? A. CN− B. NH3 C. Br2 D. Br−