Sure en basisse

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Arrhenius-teorie

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Chemistry

29 Terms

1

Arrhenius-teorie

‘n Suur is ‘n stof wat hidroniumione vorm wanneer dit in water oplos.

‘n Basis is ‘n stof wat hidroksiedione vorm wanneer dit in water oplos

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2

Lowry-Bronsted-teorie

‘n Suur is ‘n protonskenker.

‘n Basis is ‘n proton ontvanger

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3

Sterk suur

Ioniseer volledig in water om ‘n hoe konsentrasie H3O+-ione te vorm

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4

Swak suur

Ioniseer onvolledig in water om ‘n lae konsentrasie H3O+-ione te vorm

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5

Sterk basis

Dissosieer volledig in water om ‘n hoe konsentrasie OH- -ione te vorm

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6

Swak basis

Dissosieer/ioniseer onvolledig in water om ‘n lae konsentrasie OH- -ione te vorm

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7

Gekonsentreerde sure/basisse

Bevat groot hoeveelhede suur/basis in verhouding met volume water

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8

Verdunde sure/basisse

Bevat klein hoeveelhede suur/basis in verhouding met volume water

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9

Hidrolise

Reaksie van sout met water

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10

Ekwivalente punt van ‘n titrasie

Die punt waar die suur/basis volledig met die basis/suur gereageer het

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11

Eindpunt van titrasie

Die punt waar die indikator van kleur verander

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12

Kw- ewewigskonstante

ewewigskonstante vir die ionisasie van water of die ioonproduk van water of ionisasiekonstante van water

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13

Outo-ionisasie van water

die reaksie van water met water om H3O+-ione en OH- -ione te vorm

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14

Suur-basis indikator

‘n Kleurstof wat gebruik word om tussen suur-en basis oplossings te onderskei deur middel van kleurverandering wat dit ondergaan in hierdie oplossing

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15

Amfoliet

‘n Stof wat as of ‘n suur of ‘n basis kan optree in ‘n reaksie

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16

Gekonjugeerde suur/basis paar

Twee verbindings of ione wat van mekaar verskil in die teenwoordigheid van een H+ ioon

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17

Diprotiese suur

‘n Suur wat twee protone kan skenk

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18

Dissosiasie

Die proses waardeur ioniese verbindings in ione opgebreek word

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19

Ionisasie

Die proses waarin ione gedurende ‘n chemiese reaksie gevorm word

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20

Ka waarde

Ionisasie konstante vir ‘n suur

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21

Kb waarde

Dissosiasie of ionisasie konstante vir ‘n basis

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22

Monoprotiese suur

‘n suur wat een proton kan skenk

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23

Neutralisasie

Die reaksie van ‘n suur met ‘n basis om ‘n sout en water te vorm

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24

Standaardoplossing

‘n Oplossing waarvan die konsentrasie presies bekend is

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25

Ioonproduk vir water

Die produk van die ione wat tydens outo-ionisasie van water vorm

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26

pH

Die negatiewe logaritme van die hidroniumioonkonsentrasie in mol.dm-3

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27

pH-skaal

‘n Skaal van 0-14 wat as maatstaf van die suurheid of alkaliniteit van oplossings gebruik word waar pH=7 neutraal is , pH>7 basies is en pH<7 suur is.

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28

Sout

Die ionsiese verbinding wat die produk is van ‘n neutralisasiereaksie

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29

Titrasie

Die prosedure vir die bepaling van die hoeveelheid suur in ‘n oplossing deur bepaling van die volume basis van bekende konsentrasie wat volledig daarmee sal reageer.

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