All the reaction formulas for env

Question 1

Pentasodiumtriphosphate: in modern washing powders replaced by zeolites

Answer 1

Na2HPO4 + NaH2PO4 —->Na5P3O10 + 2H2O

Question 2

Use of phosphoric acid to produce fertilisers

Answer 2

1. Ca 3(PO 4) 2+4H 3PO 4→3Ca(H 2​PO 4 ) 2
   ​2. CaCO 3+2H 3PO 4 →Ca(H 2PO 4) 2+CO 2 +H 2O

Question 3

what is the formula for dissolution?

Answer 3

2NaAlSi3​O8​(s)+9H2​O(l)+2H2​CO3​(aq)\⇌Al2​Si2​O5​(OH)4​(s)+2Na+(aq)+2HCO3−​(aq)+4H4​SiO4​(aq)

Question 4

hydrolysis:

Answer 4

Mg 2SiO 4 (s)+4H 2O(l)⇌2Mg(OH) 2(aq)+H 4SiO 4(aq)

CaCO 3(s)+2H 2O(l)⇌Ca(OH) 2 (aq)+H 2CO 3(aq)

Question 5

what creates rain acidic form pollutions?

Answer 5

HNO3 and H2SO4
from pollution also

Question 6

the PH of 5.7 come form where in rainwater?

Answer 6

The carbonic acid formation.

Question 7

How do you form carbonic acid?

Answer 7

CO2+H2O ⇄ H2CO3
H2CO3⇄ H+ + HCO3-

Question 8

How do the acids form in the atmosphere?

Answer 8

H2O + SO2 → H2SO4(aq)
H2O + NOx → HNO3(aq)

NOx comes form fossil fuels
SO2 comes form volcano outgassing

Question 9

what happens when NH3+ enters the soil

Answer 9

When NH4
+ enters the soil: contributes to acidification
NH4 + 2O2 +H2O →
NO3-(aq) + 2H3O+

Question 10

what is the lime stone equation?

Answer 10

CaCO 3(s)+2H 2CO 3
​(aq)→Ca 2+ (aq)+2HCO 3−
(aq)+CO 2(g)+2H 2O(l)

Question 11

Pyrite formation

Answer 11

2 FeS2 + 7 O2 + 6 H2O 2
—-> Fe2+
(aq) + 4 SO42-
(aq) + 4 H3O+(aq)
Fe(II) released under acidic conditions

Question 12

what is the bacterial in acid mine drainage?

Answer 12

Thiobacillus ferrooxidans

Question 13

what is the lead reaction?

Answer 13

Pbs + 2H+ —-> PB 2+ + H2S