Cars up north require more antifreeze than water as a result of the colder
temperature which makes the coolant in vehicles more prone to freezing.
<h3>What is Freezing point depression?</h3>
This is a situation which occurs when solutes are added to a solvent in
order to reduce the freezing point of the solvent. The impurities help lower
the freezing point of the solvent and is commonly used in vehicles.
This is because cars in the North are exposed to colder temperatures
which could freeze the coolant(solvent).
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Element Cr goes from Cr --> Cr³⁺
element Fe goes from Fe³⁺ --> Fe²⁺
oxidation reactions are when the species gives out electrons and its oxidation number increases.
reduction reactions are when the species take in electrons and its oxidation number reduces.
Cr : oxidation number of Cr - 0 and Cr³⁺ - +3
Theres an increase in oxidation number from 0 to +3. Therefore its an oxidation reaction. Cr gets oxidised.
Fe : oxidation number of Fe³⁺ - +3 and Fe²⁺ - +2
There's a decrease in oxidation number of Fe from +3 to +2, therefore its a reduction reaction and Fe gets reduced.
Cr reduces Fe - Cr is the reducing agent
Fe oxidises Cr - Fe is the oxidising agent
Answer:
am can u pliz tell me more about ur qtn
Explanation:
like a nuclear of a what
maybe a plant or and animal
Precipitation reactions are marked by the reactant's ability to form the solid product in the solution. In the reaction between Fe(CH₃COO)₂ and K₂SO₄ zero precipitation reactions occur.
<h3>What are precipitation reactions?</h3>
Precipitation reactions are chemical reactions that involve the formation of products that are insoluble and are characterized by a solid state. It is a double displacement reaction where the stable compound forms the precipitate.
A precipitate can form only if the ions involved are insoluble. Ions of Fe(CH₃COO)₂ and K₂SO₄ are all soluble and hence no precipitate can be formed in the reaction.
Therefore, no precipitation reaction will occur.
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