chim Flashcards

1
Q

teoria ionica

A

se bazeaza pe teoria disociatei electrolitice acizizii in solutii disociaza si elibereaza ioni de hidrogen (in molecula exista ionul de h) iar bazele in solutii apaoase disociaza si eliberareaza ionul de hidroxil (in molecula exista ionul de ho)

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2
Q

ce caracter are amoniacul dizolvat in apa sau alte subst organice

A

caracter de baza

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3
Q

teoria proteolitica /teroriei de transfer

A

acizi sunt donatori de h
bazele sunt acceptori de h

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4
Q

acid baza conjugata

A

acid baza baza acid
baza acid acid baza

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5
Q

ph-ul exponentul de hidrogen

A

este definit ca logaritm zecimal cu semn schimbat al concentratilor ionilor de hidrogen

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6
Q

ce exprima ph

A

exprima aciditatea sau alcaliniatea unui mediu

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7
Q

pOH exponentul hidroxil

A

definit prin anologie

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8
Q

in ce se desfasoara majoritatea reactilor

A

in mediul apos ,apa pura foarte putin ionizata disociaza in ioni hidroniu h3o si ioni hidroxil ho

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9
Q

cat de ionizata este apa

A

putin ionizata concenteratia ei este foarte mare 5,5M practic este nemodificata de ionizarea ei

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10
Q

constastanta de echilibru

A

Kx[H2O]2=[H3O+]x[HO-]
Kw

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11
Q

solutie acida
solutie bazica

A

[H3O+]>[HO]
[H3O+]<[HO]

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12
Q

PH
PoH

A

<7 pOH >7 ACID
>7pOH<7 BAZA
7=POH PH NEUTRU

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13
Q

cresterea bicarbonat / acid carbonic alcaloza

A

metabolism stenoza pilorica
ingestia de subst alacaline
respiratorie hiperventilatie in caz de hiperexcitabiliate a cent resp leziuni nervosase axiettea isterie in toxicatii cu salicilati febra ridicata

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