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Chemistry
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Explain how pH changes can be minimised using a mixture of a weak acid and it's conjugate base

This mixture of a weak acid (HA) and it's conjugate base (A-) acts as a buffer. A buffer is a solution with a highly stable pH. On addition of small amounts of either a strong acid ...

CT
Answered by Cora T. Chemistry tutor
4585 Views

Describe chemical test/s you could use to determine the identity of a carbonyl compound.

Use Brady's Reagent (2,4-DNPH) to test for the presence of the C=O bond in a carbonyl compound. The formation of a yellow precipitate indicates a positive test result. Then determine the melting point ...

MB
Answered by Megan B. Chemistry tutor
7680 Views

What is activation energy?

This is the minimum amount of energy reacting particles must have to undergo a chemical reaction.

SA
Answered by Suzy A. Chemistry tutor
3533 Views

What factors affect rate of reaction?

In order for a reaction to occur, particles must 1. COLLIDE with each other 2. with sufficient KINETIC ENERGY (energy greater than or equal to the ACTIVATION ENERGY). This is known as Collision Theory....

AH
Answered by Amy H. Chemistry tutor
9488 Views

Is there an easy way to answer questions about oxidation and reduction?

YES! OILRIG stands for Oxidation is loss, Reduction is gain 

This means that when a chemical is OXIDISED it has LOST an electron and when a chemical is REDUCED it has GAI...

HC
Answered by Hannah C. Chemistry tutor
2262 Views

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