To find the molecular formula of carbonic acid using the criss-cross method, we first need to know the valencies of the elements involved. Carbonic acid is formed from carbon (C), hydrogen (H), and oxygen (O) atoms. The valency of carbon is 4, the valency of hydrogen is 1, and the valency of oxygen is 2.
The chemical formula for carbonic acid is H2CO3.
Using the criss-cross method:
Step 1: Write the symbols of the elements involved.
H C O
Step 2: Write the valency of each element below its symbol.
1 4 2
Step 3: Criss-cross the valencies of the elements.
The 1 from hydrogen goes with the 4 from carbon, and the 2 from oxygen goes with the 4 from carbon.
Step 4: Simplify the ratios.
Divide both 4 and 2 by their greatest common factor (2 in this case).
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Verified answer
Answer:
H2CO3
Explanation:
To find the molecular formula of carbonic acid using the criss-cross method, we first need to know the valencies of the elements involved. Carbonic acid is formed from carbon (C), hydrogen (H), and oxygen (O) atoms. The valency of carbon is 4, the valency of hydrogen is 1, and the valency of oxygen is 2.
The chemical formula for carbonic acid is H2CO3.
Using the criss-cross method:
Step 1: Write the symbols of the elements involved.
H C O
Step 2: Write the valency of each element below its symbol.
1 4 2
Step 3: Criss-cross the valencies of the elements.
The 1 from hydrogen goes with the 4 from carbon, and the 2 from oxygen goes with the 4 from carbon.
Step 4: Simplify the ratios.
Divide both 4 and 2 by their greatest common factor (2 in this case).
The simplified ratio is 2:1:2.
Step 5: Write the final molecular formula.
The molecular formula of carbonic acid is H2CO3.