Which of the following statements about carbon dioxide is true?
is a reducing agent.
is soluble in water, forming an acidic solution.
is a linear molecule with no dipole moment.
is a stable compound that does not react with any other elements.
The correct answer is (B) is soluble in water, forming an acidic solution. When carbon dioxide dissolves in water, it reacts with water to form carbonic acid, which is a weak acid and can lower the pH of the solution. Hence option B is the correct answer.
Option (A) is incorrect because is an oxidizing agent, not a reducing agent. Hence option A is incorrect.
Option (C) is incorrect because is a linear molecule with a dipole moment due to the difference in electronegativity between carbon and oxygen. Hence option C is incorrect.
Option (D) is incorrect because can react with other compounds, such as in the process of photosynthesis. Hence option D is incorrect.