Question

CO2 =>H2CO3 =>CaCO3 =>CO2 =>K2CO#

Answer 1

CO2 + H2O = H2CO3

H2CO3 + Ca(OH)2 = CaCO3 + 2H2O

CaCO3 =(t°)= CaO + CO2

CO2 + 2KOH = K2CO3 + H2O

Answer 2

It looks like you have provided a series of chemical equations involving carbon dioxide (CO2) and different chemical compounds. However, there seems to be a typo in the last equation; it says "CO2 => K2CO#," but it seems incomplete.

Based on the provided equations, I will try to explain the reactions step by step:

1. CO2 => H2CO3: This equation represents the dissolution of carbon dioxide (CO2) in water (H2O) to form carbonic acid (H2CO3). The reaction can be written as follows: CO2 + H2O → H2CO3

2. H2CO3 => CaCO3: In this step, carbonic acid (H2CO3) reacts with a calcium-containing compound, such as calcium hydroxide (Ca(OH)2) or calcium oxide (CaO), to produce calcium carbonate (CaCO3). The equation can be written as follows: H2CO3 + Ca(OH)2 → CaCO3 + 2H2O

3. CaCO3 => CO2: This equation represents the decomposition of calcium carbonate (CaCO3) into carbon dioxide (CO2) and calcium oxide (CaO) upon heating. The reaction can be written as follows: CaCO3 → CO2 + CaO

Now, the last equation in your sequence, "CO2 => K2CO#", is incomplete. It seems like you intended to write a reaction involving potassium carbonate (K2CO3), but the specific details are missing. If you can provide the complete reaction, I'd be happy to help you understand it.