Chapter 13- Acid Base Flashcards Preview

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Flashcards in Chapter 13- Acid Base Deck (21):
1

Properties of acids

Usually taste sour
are corrosive
Are moelcular in structure and dissolve in water to produce an electrolyte
Neutralised by bases

2

Properties of bases

-Usually taste bitter
-Feel slippery
-Usually insoluble in water

3

Acid ....... a proton (H+ ion)

looses

4

Base....... a proton (H+ ion)

gains

5

What is an ionisation reaction?

A reaction in which a substance reacts with water to produce ions.

6

Hydrolysis Reaction

When one substance reacts with water to form OH- or H3O+ ions

7

Explain the process of neutralisation

Process of an acid reacting with a base, produces a salt and water.

8

What are spectator ions?

ions that do not take part in the reaction

9

Conjugate acid-base pairs

The substance acting as an acid gives away the proton forms a conjugate base. The substance acting as as base after accepting a proton forms a conjugate acid.

10

conjugate base=

acid- H+

11

conjugate acid=

base+ H+

12

Define polyportic acids

Acids that can donate more than one proton per molecule untill acid

13

Amphiprotic substances

Substances that can act as either acids or bases, such as water

14

Explain self ionisation in reagrds to water

Water ca react with itself as it can act as both an acid and a base.

15

Explain the difference between a strong acid and a weak acid

-indicates how readily an acid donates protons
-stronf acids form large number of ions in water and form solutions that are good conductors of electricity
-Weak acids do not donate protons as readily
-As a result few ions are formed by reaction and resulting in poor electrical conductor.

16

What does the pH scale range to

1-14

17

what does pH equal

hydronium concentration

18

OIL RIG

OIXIDATION
IS
LOSS
REDUCTION
IS
GAIN

19

Oxdiant

Causes the oxidation of another substances and itself is reduced

20

Reductant

is tha species that causes reduction of another substance and it itself is oxidised

21

Summary of steps for balancing half-equations

1. write half equations for oxidation and reduction showing conjugate pairs.
2. Balance all elements expect hydrogen and oxygen
3. balance oxygen atoms by adding water
4. Balance hydrogen atoms where needed by adding H+
5. Balance charge by adding in electrons
6. Multiply each half equation that will lead to the same number of electrons in each half equation
7. Add the half equations and omit the electrons