page 03 4. Which line in the table would best describe elements that act as reducing agents? Gains or loses electrons Electronegativity A gains low B loses low C gains high D loses high 5. The correct redox equation for the reaction of iron(II) ions with acidified dichromate ions is: A Cr2O7 2−(aq)  +  14H+(aq)  +  Fe2+(aq) ↓  2Cr3+(aq)  +  7Η2Ο(ℓ)  +  Fe(s) B Cr2O7 2−(aq)  +  14H+(aq)  +  Fe2+(aq) ↓  2Cr3+(aq)  +  7H2O(ℓ)  +  Fe3+(aq) C Cr2O7 2−(aq)  +  14H+(aq)  +  6Fe2+(aq) ↓  2Cr3+(aq)  +  7H2O(ℓ)  +  6Fe(s) D Cr2O7 2−(aq)  +  14H+(aq)  +  6Fe2+(aq) ↓  2Cr3+(aq)  +  7H2O(ℓ)  +  6Fe3+(aq) 6. A mixture of magnesium bromide and magnesium sulfate is known to contain 3 moles of magnesium ions and 4 moles of bromide ions. How many moles of sulfate ions are present? A 1 B 2 C 3 D 4 7. H C H H H C C H O O C H H H C H C H H H H C H H H C The correct name for this ester is: A butyl propanoate B propyl butanoate C pentyl propanoate D propyl pentanoate. [Turn over