Question 32

2H₂O represents two water molecules.

The compound 2H₂O indicates that there are two molecules of water, as the coefficient '2' in front of H₂O signifies the quantity of water molecules present.

A) 2H₂O has a total of 2 hydrogen atoms.

This statement is incorrect because 2H₂O contains a total of 4 hydrogen atoms. Each water molecule (H₂O) has 2 hydrogen atoms, so two water molecules would have 2 x 2 = 4 hydrogen atoms.

B) 2H₂O represents two water molecules.

This statement is accurate because the '2' in front of H₂O indicates that there are two separate H₂O molecules, confirming the correct interpretation of the formula.

C) H₂O represents two water molecules.

This is incorrect since H₂O represents only one water molecule. The absence of a coefficient in front of H₂O indicates that there is just a single molecule of water.

D) None of the above.

This option cannot be correct because option B is a true statement. Therefore, stating that none of the options are accurate is itself inaccurate.

Conclusion

Option B is definitively correct as it accurately reflects the meaning of the coefficient in the chemical formula 2H₂O, which denotes two water molecules. The other options fail to correctly interpret the chemical notation, making them incorrect. Understanding chemical formulas is crucial for interpreting molecular quantities accurately.