acids Flashcards

1
Q

What is formed when acids react with metal oxide?

A

Salt and water

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2
Q

What is the colour of phenolphthalein in acid, base and at the end point?

A

Acid = colourless

Base = pink

End point = colourless

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3
Q

What are hydrated crystals?

A

A crystalline structure containing water of crystallisation

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4
Q

Define 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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5
Q

What is formed when an acid reacts with alkali?

A

Salt and water

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6
Q

Describe the dissociation of a strong acid

A

A strong acid fully dissociated to release H+ ions in an aqueous solution

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7
Q

Define a base

A

Proton acceptor

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8
Q

Define anhydrous crystals

A

A crystalline form that contains no water

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9
Q

How are ammonium salts formed?

A

When acid reacts with aqueous ammonia

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10
Q

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

A

H+ ion

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11
Q

Which base is used to treat acid indigestion?

A

Magnesium hydroxide

MgOH

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12
Q

What is formed when an acid reacts with a carbonate?

A

Salt, carbon dioxide and water

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13
Q

What does a dot formula indicate?

A

The amount of water present in a crystalline structure

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14
Q

What are amphoteric substances?

A

Substances that can act as acids and bases

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15
Q

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

A

Both alkali and metal oxides are types of bases

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16
Q

Define an acid

A

Proton donor

17
Q

Define alkalis

A

Bases that can dissolve in water to form aqueous OH- ions

18
Q

Describe the method to carry out a titration

A
  1. Using a pipette, measure out the volume of a solution
  2. Add the solution into a conical 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 formed when acids react with metal?

A

Salt and hydrogen gas