Question

3) (1) Rainwater is slightly acidic because it reacts with dissolved CO2 gas. Complete the following reaction of water and CO2: H2O(l) + CO2(g) - (II) Why are lakes and streams with limestone rock bottoms less susceptible to acidi- fication? Complete and balance the chemical reaction. CaCO3(s) + H+(aq) → (II) What are the differences between aerobic and anaerobic decay? Fill in the follow- ing table. Occurs in the presence of dissolved oxygen? Water Possible products (Choose from the list below) Oxidation or reduction reaction? Aerobic decay Anaerobic decay Examples of substances that form in water when organic matter is broken down: CO2, CH, NH3, NO3-, PO43-, 50,3-, CH,SH, HCO3, RNH, H,S

Answer 1

choses i) 1,018) + CO2(g) — Hco caq.) d) Cacojot 21* caq:) — Ca* + Co, CD) + H2O(8) CS Scanned with CamScanner

in) Water , Occurs in bresence of dissolved oxygen I oxidation or reduction reaction possible products Merobic Yes Oxidatien decay NO, PONT Soua ; CO2 Исо, - Anaurobic No Reduction decay CHU, H₂S, NH3, H3 SH, R-NH₂ Scanned with CamScanner