OCR A2 Chemistry: Acid-Base Reactions

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  • Created by: LucySPG
  • Created on: 15-09-13 18:04
Name the 4 properties of acidic solutions
Turns litmus read. pH < 7. Neutralises bases.
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What is an acid?
A substance that has the ability to transfer H+ ions
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What is a base?
A substance that accepts H+ ions
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What is an alkali?
A base that dissolves in water to produce hydroxide ions
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What is the theory of H+ transfer known as?
The Brönsted-Lowry theory
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What is the Brönsted-Lowry theory?
An acid is a H+ donor. A base is a H+ acceptor.
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What is a conjugate acid?
The species that accepts protons in the reverse reaction
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What is a conjugate base?
The species that donates protons in the reverse reaction
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What are substances that can act as both acids and bases called?
Amphoteric
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What happens during an acid-base reaction?
H+ ions move from the acid to the base
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What is a conjugate base and a conjugate acid reffered to as?
A conjugate acid-base pair
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What are acids that are powerful proton donors called?
Strong acids
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What are acids that are moderate or poor proton donors called?
Weak acids
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What strength is the base of a strong acid?
Weak base
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What strength is the acid of a strong base?
Weak acid
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Are acid-base indicators weak or strong acids?
Weak acids
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What must the conjugate acid and base have in order to behave as indicators?
Different colours
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What determines the colour of the indicator?
The posistion of equilibrium
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Other cards in this set

Card 2

Front

What is an acid?

Back

A substance that has the ability to transfer H+ ions

Card 3

Front

What is a base?

Back

Preview of the front of card 3

Card 4

Front

What is an alkali?

Back

Preview of the front of card 4

Card 5

Front

What is the theory of H+ transfer known as?

Back

Preview of the front of card 5
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