AQA CHEMSTRY C3 QUESTIONS AND VALIDATED ANSWERS 2025 NEWEST UPDATE.

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AQA CHEMSTRY C3 QUESTIONS AND VALIDATED ANSWERS 2025 NEWEST UPDATE.

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Institution AQA CHEMSTRY C3

Course AQA CHEMSTRY C3

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What happens if you increase the temperature in the reaction for the Haber process? - CorreCt Answers -the yield from the endothermic reaction increases and the yield from the exothermic reaction decreases What happens if you decrease the temperature in the reaction for the Haber process? - CorreCt Answers -the yield from the endothermic reaction decreases and the yield from the exothermic reaction increases What happens if you increase the pressure in the reaction for the Haber process? - CorreCt Answers -the reaction will lean towards that which produces the least number of molecules

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AQA CHEMSTRY C3 QUESTIONS AND
VALIDATED ANSWERS 2025 NEWEST
UPDATE.

What happens if you increase the temperature in the reaction for the Haber
process? - CorreCt Answers -the yield from the endothermic reaction
increases and the yield from the exothermic reaction decreases

What happens if you decrease the temperature in the reaction for the Haber
process? - CorreCt Answers -the yield from the endothermic reaction
decreases and the yield from the exothermic reaction increases

What happens if you increase the pressure in the reaction for the Haber
process? - CorreCt Answers -the reaction will lean towards that which
produces the least number of molecules

What is the functional group of alcohols? - CorreCt Answers --OH

What are the first three members of a homologous series of alcohols? -
CorreCt Answers -methanol, ethanol, propanol

Give four properties/uses of alcohols - CorreCt Answers -→dissolve in
water to form a neutral solution
→ react with sodium to produce hydrogen
→ burn in air
→ used as fuels, solvent and alcoholic drinks

, Which alcohol can be used to oxidise ethanoic acid? - CorreCt Answers -
ethanol (either by chemical oxidising agents or by microbial action)

What is the main acid in vinegar? - CorreCt Answers -ethanoic acid

What is the functional group of carboxylic acids? - CorreCt Answers --
COOH

What are the first three members of a homologous series of carboxylic
acids? - CorreCt Answers -methanoic acid, ethanoic acid, propanoic acid

Give five properties of carboxylic acids? - CorreCt Answers -→ dissolve in
water to produce acidic solutions
→ react with carbonates to produce carbon dioxide
→ react with alcohols in the presence of an acid
catalyst to produce esters
→ do not ionise completely when dissolved in
water and so are weak acids
→ aqueous solutions of weak acids have a higher
pH value than aqueous solutions of strong
acids with the same concentration.

What is the functional group of esters? - CorreCt Answers --COO-

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