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OCR A LEVEL CHEMISTRY > 2.1.4 - Acids > Flashcards

2.1.4 - Acids Flashcards

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1
Q

When an acid is added to water, what ion is released into the solution?

A

Hydrogen ion, H+

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2
Q

Define an acid?

A

Proton donor

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3
Q

Describe the dissociation of a strong acid

A

Full dissociation

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4
Q

Define base

A

Proton acceptor

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5
Q

Which base is used to treat acid indigestion?

A

Magnesium hydroxide

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6
Q

What are alkalis

A

Bases that can dissolve in water to form aqueous hydroxide ions

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7
Q

What are amphoteric substances?

A

Substances that act as acids and bases

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8
Q

What id formed when acid reacts with carbonate?

A

Salt, carbon dioxide and water

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9
Q

What is a salt?

A

A compound that is formed when H+ of an ion is replaced by a metal ion or positive ion

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10
Q

What is formed when acids react with metal oxide?

A

Salt and water

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11
Q

What is formed when acid reacts with alkali?

A

Salt and water

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12
Q

What is formed when acids react with metal?

A

Salt and hydrogen

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13
Q

Why are the products same when acid reacts with alkali or metal oxides?

A

Both alkali and metal oxides are types of bases

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14
Q

How are ammonium salts formed?

A

When acid reacts with aqueous ammonia

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15
Q

What are hydrated crystals?

A

A crystalline structure containing water

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16
Q

What does anhydrous crystals mean?

A

Crystalline form that contains no water

17
Q

What does a dot formula indicate?

A

The amount of water present in a crystalline structure

18
Q

Write down the methods to carry out a titration

A
  1. Using a pipette, measure the volume of a solution
  2. Add the solution into a conic al flask and add an indicator into it
  3. Add the other solution into a burette and record the volume
  4. Slowly add the solution in the burette into the conical flask
  5. Swirl the mixture continuously until the endpoint is reached
  6. Repeat until concordant results are obtained
19
Q

What is the colour of methyl orange in an acid, base and at end point?

A

Acid - red
Base - yellow
End point - orange

OCR A LEVEL CHEMISTRY (48 decks)

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