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Chemistry

A Level

Describe the Le Chantelier principle

If a factor affecting the position of an equlibirum is altered, the position fo equlibrium shifts to oppose the effect of the change.

Answered by Sudip S. • Chemistry tutor

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Write a balanced equation for the reaction between NaOH and sulfuric acid. A conical flask contains 25cm^3 of 0.124M NaOH, a burette contains 0.0625M sulfuric acid. Find the minimum amount of acid required to completely react with the NaOH in the flask.

first, consider balanced equation: consider reaction occuring: NaOH + H₂SO₄ --> Na₂SO₄ + H₂O (neutralisation) ions present in each reactant...

Answered by Harriet M. • Chemistry tutor

8590 Views

Explain, in the context of catalysis, the term heterogeneous and describe the first stage in the mechanism of this type of catalysis.

A heterogeneous catalyst a catalyst that is in a alternative phase/state to the reactants. The first stage of catalysis by a heterogeneous catalyst is absorption of the reactants onto the surface of the c...

Answered by Hugo B. • Chemistry tutor

2723 Views

what is entropy in terms of disorder?

In terms of chemistry- entropy refers to disorder, so basically things coming out of order. So a reaction involving chemical A moving from a solid to a gaseous state. This change in state of matter, from ...

Answered by Nimai D. • Chemistry tutor

2515 Views

How to calculate acidic buffer solution pH, and how do they behave?

Example: Calculate the pH of a buffer solution which contains the weak monoprotic acid, propanoic acid (CH3CH2COOH), in concentration 0.1 moldm-3 and sodium propanoate in concentration 0.05 moldm-3. Ka of...

Answered by Kareem H. • Chemistry tutor

20556 Views