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In permanganometry, the addition of phosphoric acid (H₃PO₄) serves to maintain an acidic environment for the redox titration involving potassium permanganate (KMnO₄). The permanganate ion (MnO₄⁻) acts as an oxidizing agent, typically reducing to manganese(II) ions (Mn²⁺) in acidic conditions. The reaction can be represented as:
[ \text{MnO}_4^- + 8 \text{H}^+ + 5 \text{e}^- \rightarrow \text{Mn}^{2+} + 4 \text{H}_2\text{O} ]
Phosphoric acid helps in stabilizing the solution and preventing side reactions that might occur in neutral or basic conditions.
What else can I help you with?
When heat energy is added the speed of the molecules?
To hasten chemical reactions.
What are some chemical reactions?
some chemical reactions take place when a chemical is added to a metal. sometimes the chemicl turns cloudy, it may fizz or a coat of black may appear on the piece of metal. hope this helps! :)
A chemical property is a change in what?
There are many different possible property changes in a chemical change. You must post the specific reaction for anyone to tell you exactly.
What chemical inhibitors are often used. And what chemical reactions are they used in?
An inhibitor is a substance added in a system with the goal to decrease the rate of reaction. Example: inhibitors added to decrease the rate of corrosion, inhibitors in drugs the decease the activity of an enzyme, etc.
What is formed by chemical reactions between sulfur and oxygen?
The main product is sulfur dioxide, which smells like rotten eggs and when added to water forms sulfurous acid. In the presence of a catalyst sulfur trioxide forms, which when added to water makes sulfuric acid.
When heat energy is added the speed of the molecules?
To hasten chemical reactions.
How does the law of the conservation of mass apply to to chemical reactions?
Atoms cannot be added or lost in a chemical reaction.
What is the term for the amount of energy that needs to be added for chemical reactions to start?
activation energy
What are some chemical reactions?
some chemical reactions take place when a chemical is added to a metal. sometimes the chemicl turns cloudy, it may fizz or a coat of black may appear on the piece of metal. hope this helps! :)
Why is cooking an endothermic process?
Energy must be continuously added for the chemical reactions to take place.
Why is cooking an endothermic proccess?
Energy must be continuously added for the chemical reactions to take place.
Element used to speed up chemical reactions?
Anything that is added to a chemical reaction that's intended to speed up the reaction - is a catalyst.
What is the chemical equation for the reactions when copper is added to aluminum sulfate?
The chemical equation for the reaction when copper is added to aluminum sulfate is: 3Cu + 2Al2(SO4)3 -> 3CuSO4 + 2Al
Why is water added in the preparation of aspirin?
Water is added in the preparation of aspirin to help dissolve the ingredients and facilitate the chemical reactions needed to make the medication.
What is the role of phosphoric acid in titration?
Phosphoric acid is often used as a buffer in titration reactions to stabilize the pH of the solution. It helps maintain a constant pH by resisting changes in acidity when small amounts of acid or base are added during the titration process. This is important for ensuring the accuracy and precision of the titration results.
Heat exchange in chemical reactions is due to a change in what?
Enthalpy-The heat added to or loss by a system at constant pressure
Chemical reactions that absorb energy will not occur without a source of energy true or false?
This is true. Energy is required to begin all reactions.
