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Chemistry > 3.1 Acids > Flashcards

3.1 Acids Flashcards

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1
Q

In Aqueous solutions what ions do acids produce?

A

H+ ions

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2
Q

In Aqueous solutions what ions do Alkalis produce?

A

OH -

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3
Q

What colour does phenolphthalein go when the substance is alkaline?

A

Pink

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4
Q

What colour does Phenolphthalein go when a substance is acidic?

A

Colourless

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5
Q

If a substance is Alkaline what colour will methyl orange go?

A

Yellow

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6
Q

If a substance is acidic what colour will Methyl Orange go?

A

Red

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7
Q

If Litmus paper is blue is the substance acid or alkali?

A

Alkaline

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8
Q

If Litmus Paper is red is the substance acid or alkali?

A

Alkali

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9
Q

If the PH increases by 1 unit he concentration of H+ ions increases by a factor of what?

A

10

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10
Q

What does concentrated mean?

A

Larger amount of substance in a given volume of a solution

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11
Q

What does dilute mean?

A

Lesser amount of substance in a given volume of a substance

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12
Q

What is Dissociation?

A

Where the acid breaks down to release H+ ions in a solution

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13
Q

What does a strong acid fully do in aqueous solutions?

A

dissociates

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14
Q

What does a weak acid do in aqueous solutions?

A

Partially dissociate

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15
Q

Acid+Base=?

A

Salt +Water

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16
Q

Are acids or Alkalis soluble bases?

A

Alkalis

17
Q

Acid+Metal=?

A

Salt + Hydrogen gas

18
Q

Acid + Metal Oxide=?

A

Salt + Water

19
Q

Acid+Metal Hydroxide=?

A

Salt + Water

20
Q

Acid + Metal carbonate =?

A

Salt + Water + Carbon dioxide

21
Q

What would you do to test for hydrogen?

A

Place a lit splint to the test tube and wait for a squeaky pop if hydrogen is present

22
Q

What is the test for carbon dioxide?

A

Bubble the gas through the limewater and if CO2 is present the limewater will turn milky

23
Q

For any neutralisation reaction with an acid and an alkali what is the equation?

A

H+(AQ)+OH-(AQ)=H20 (L)

24
Q

If soluble salts are prepared from an acid and a soluble reactant why should titration be used?

A

Both reactants are liquid/soluble so if you had excess of one you would not be able to easily remove it from your mixture. This means you need to measure exact amounts and this can easily be done with Titration.

You would then have to mix the two reactants

Chemistry (25 decks)

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