Question detail
What happens when methanoic acid dissolves in water?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Reactions of alkenes and alcohols (chemistry only)
Question
What happens when methanoic acid dissolves in water?
Answer
When methanoic acid dissolves in water, it ionizes to form methanoate ions and hydrogen ions. This process results in a solution that can conduct electricity due to the presence of these ions.
Explanation
This question tests the understanding of the behavior of carboxylic acids in water, specifically their ability to ionize. It assesses knowledge of the properties of acids and their solutions. This response is aligned to Carboxylic acids because it explains describe what happens when any of the first four carboxylic acids dissolve in water using the correct AQA GCSE Chemistry organic context. Keep molecular formula, structural formula, displayed formula, and general formula distinct. Do not confuse alkanes with alkenes, saturated with unsaturated, cracking with combustion, polymers with monomers, or hydrocarbons with oxygen-containing alcohols and carboxylic acids. When formulae are used, preserve the stored notation exactly and explain the GCSE chemistry idea in words rather than using unsupported displayed-formula diagrams.
Common mistake
Partial Ionisation of Carboxylic Acids
Students often assume that carboxylic acids completely dissociate into ions when they dissolve in water, just like strong acids.
In reality, carboxylic acids are weak acids; when dissolved they only partially ionise, establishing an equilibrium between the undissociated acid (RCOOH) and its ions (RCOO⁻ and H⁺).
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