Acid&Bases Flashcards

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1
Q

What are H+ ions responsible for?

A

H+ ions in aqueous solution are responsible for acidic properties.

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2
Q

How do acids behave?

A

Acids only behave as acids when ionized in water. Acid molecules dissociate to form H+ ions.

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3
Q

What happens to hydrochloride gas when they are dissolved in organic solvents?

A

Hydrogen chloride gas exists as molecules and the H+ ions will not dissociate and thus the solution is not reactive.

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4
Q

State two properties of acids.

A

They have a sour taste and turns damp blue litmus red.

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5
Q

Is dry hydrochloride gas acidic?

A

No. It exists as a vapor, and the HCl molecule is not ionized to give out H+ ions which are responsible for the acidic properties.

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6
Q

How do we make HCl gas acidic and why?

A

Dissolve it in water as the aqueous solution of HCl contains H+ ions.

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7
Q

What is the difference between strong and weak acids?

A

Strong acids dissociate completely in water to produce high concentration of h+ ions, while weak acids dissociates partially in water to produce low concentration of H+ ions.

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8
Q

Define bases.

A

A base is a metal oxide or hydroxide that reacts with an acid to produce salt and water only. They are usually insoluble in water.

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9
Q

What happens when a bad is able to dissolve in water?

A

It will form an alkali.

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10
Q

Define alkali.

A

An alkali is a soluble base.

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11
Q

State the 6 properties of alkalis.

A

1) turns damp red litmus blue.
2) soapy feel
3) they have a bitter taste.
4) corrosive
5) conduct electricity.
6) neutralization reaction (react with acid to produce salt and water)

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12
Q

What is produced when a base reacts with acid?

A

Salt and water.

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13
Q

What is produced when a base reacts with ammonium salts?

A

Salt, water, ammonia gas

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14
Q

define pH.

A

Measure how alkaline or acidic an aqueous solution is and normally ranges from 0-14.

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15
Q

How is a pH of a solution determined?

A

Universal indicator or pH meter.

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16
Q

What is a universal indicater?

A

A mixture of dyes and it shows a different color at a different pH.

17
Q

State Two ways to neutralize the soil.

A

Add Ca(OH)2 (slaked lime) or CaO. (Quicklime)

18
Q

Define acids.

A

An acid is a substance that dissociates in water to produce H+ ions.