Kunsmis Flashcards

1
Q

Nie-mineraal voedingstowwe wat plante benodig + bronne

A

C(atmosfeer), H(reenwater in grond) en O(Reenwater in grond)

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2
Q

Primere vodingstowwe

A

N(Guano), P(Beenmeel) en K(Kaliumsoute voorsien deur potas)

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3
Q

Funksie van N in plante

A

Bevorder blaar- en stingelgroei

Bevorder blaarkleur en vergroot die grootte van die plant

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4
Q

Funksie van P in plante

A

Bevorder blaargroei en die ontkieming van sade

Bevorder rypword van gewasse

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5
Q

Funksie van K in plante

A

Bevorder blom- en vrugte produksie

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6
Q

Sasol Lurgi proses

A

C(s) + H2O(g) — CO(g) + H2(g)

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7
Q

Haberproses

A

N2(g) + 3H2(g) <> 2NH3(g)

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8
Q

Reaksietoestande van Haberproses

A

Temp 400 - 500C
Druk 300 atm
Katalisator Fe/ Fe + Fe2O3 mengsel

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9
Q

Ostwaldproses

A

4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g)
2NO(g) + O2(g) > 2NO2(g)
3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) OF
4NO2(g) + O2(g) + 2H2O(l) > 4HNO3(aq)

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10
Q

Reaksietoestande van Ostwaldproses

A

Katalisator Pt

900C en 1000 kPa

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11
Q

Kontakproses

A

S(s) + O2(g) > SO2(g)
2SO2(g) + O2(g) <> 2SO3(g)
2SO3(g) + H2SO4(l) > H2S2O7(l)
H2S2O7(l) + H2O(l) > 2H2SO4(l)

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12
Q

Reaksietoestande van stap 2 van kontakproses

A

Temp: 400-500 C
Druk 1 atm
Katalisator V2O5

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13
Q

Bereiding van ammoniumnitraat

A

NH3 + HNO3 > NH4NO3

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14
Q

Bereiding van ammoniumsulfaat

A

2NH3 + H2SO4 > (NH4)2SO4

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15
Q

Invloed van kunsmis op die mens en omgewing

A

Besoedel grondwater met nitrate
Besoedel waterbronne
Besoedel grond met ammoniumsoute
Eutrofikasie

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16
Q

Eutrofikasie

A

Die proses waarin ‘n ekosisteem verryk word met anorganiese plantvoedingstowwe, veral fosfor en stikstof, wat tot oormatige plantgroei lei. Soos wat plantgroei oormatig word, vermeerder die dooie en verrottende plantmateriaal vinning.

17
Q

Alternatiewe vir anorganiese kunsmis

A

Kraalmis
Hoendermis
Kompos