1.Carbon occurs in water in 3 different photons, CO2, HCO₃^-, and CO₃^-2. 

a- Is there a certain pH value at which carbon occurs in all 3 forms? Yes/NO

b- In seawater (pH =8.2) the greatest percentage of carbon occurs in the form HCO3^-? Yes/NO

2.Carbon can occur in Water in three different photons (substance) as Carbon dioxide (CO₂), hydrogen carbonate (HCO₃), or Carbonate ( The pH value of (water indicates how high the percentage of three forms is (substance amount). 

The diagram shows these substances amount depending on the pH value.

  

Which of the following is correct 

A)In Seawater (pH value of 8.2) The greatest percentage of carbon occurs in the form of HCO₃ 

B) There is a pH value at which carbon occurs in water in the form of CO₂ as in the form of HCO₃^- and CO₃^{- 2}

a. Only A is correct 

b. Only B is correct 

c. Both are correct 

d. None is correctn

Transcribed Image Text:

J00 80 Carbonate 60Carbon dioxide Earbonate 20 PH value 10 11 12 13 too J00 80 Carbonate 60Carbon dioxide Earbonate 20 PH value 10 11 12 13 too