Question

1)Ba-->BaO-->Ba(OH)2-->BaCO3-->CO2-->Na2CO3-->CaCO3 2)Ba-->Ba(OH)2 3)BaO-->Ba3(PO4)2

Answer 1

1)2Ba+O2=2BaO

Ba+2H2O=Ba(OH)2+H2

Ba(Oh)2+H2co3=BaCo3+H2O

BaCO3->BaO+Co2

CO2+2NaOh=Na2CO3+H2o

Na2CO3+Ca(NO3)2=CaCO3+2NaNO3

2)Ba+2H2O=Ba(OH)2+H2

3)3BaO+2H3Po4=Ba3(PO4)2+3H2O

Answer 2

1) Ba --> BaO --> Ba(OH)2 --> BaCO3 --> CO2 --> Na2CO3 --> CaCO3

The given sequence shows a series of chemical reactions starting with Ba and ending with CaCO3. Let's break down each step:

1. Ba --> BaO: This reaction involves the conversion of Barium (Ba) to Barium Oxide (BaO). The reaction can be represented as:

Ba + O2 --> BaO 2. BaO --> Ba(OH)2: This reaction involves the reaction of Barium Oxide (BaO) with water (H2O) to form Barium Hydroxide (Ba(OH)2). The reaction can be represented as:

BaO + H2O --> Ba(OH)2 3. Ba(OH)2 --> BaCO3: This reaction involves the reaction of Barium Hydroxide (Ba(OH)2) with carbon dioxide (CO2) to form Barium Carbonate (BaCO3). The reaction can be represented as:

Ba(OH)2 + CO2 --> BaCO3 4. BaCO3 --> CO2: This reaction involves the decomposition of Barium Carbonate (BaCO3) into carbon dioxide (CO2) and Barium Oxide (BaO). The reaction can be represented as:

BaCO3 --> CO2 + BaO 5. CO2 --> Na2CO3: This reaction involves the reaction of carbon dioxide (CO2) with sodium hydroxide (NaOH) to form sodium carbonate (Na2CO3). The reaction can be represented as:

CO2 + 2NaOH --> Na2CO3 + H2O 6. Na2CO3 --> CaCO3: This reaction involves the reaction of sodium carbonate (Na2CO3) with calcium chloride (CaCl2) to form calcium carbonate (CaCO3). The reaction can be represented as:

Na2CO3 + CaCl2 --> CaCO3 + 2NaCl

2) Ba --> Ba(OH)2

This reaction involves the reaction of Barium (Ba) with water (H2O) to form Barium Hydroxide (Ba(OH)2). The reaction can be represented as:

Ba + 2H2O --> Ba(OH)2

3) BaO --> Ba3(PO4)2

The given reaction involves the reaction of Barium Oxide (BaO) with phosphoric acid (H3PO4) to form Barium Phosphate (Ba3(PO4)2). The reaction can be represented as:

3BaO + 2H3PO4 --> Ba3(PO4)2 + 3H2O Please note that the information provided is based on the search results and may not cover all possible reactions or conditions.