Common gases found in water include hydrogen sulfide, carbon dioxide, methane, and sodium chloride.

Common gases found in water include hydrogen sulfide, carbon dioxide, methane, and sodium chloride.

• A. False
• B. True
• C. Only hydrogen sulfide is present
• D. Sodium chloride is a gas

Answer: (A)

Gases dissolved in water are gas-phase molecules that can be present in solution, such as carbon dioxide, hydrogen sulfide, methane, and even oxygen. Sodium chloride, on the other hand, is a salt that dissolves into ions (Na+ and Cl−) and is not a gas. Because the list mixes actual gases with a non-gas substance, the statement is not correct. In water, you can have the dissolved gases mentioned, but sodium chloride is not a gas.

Gases dissolved in water are gas-phase molecules that can be present in solution, such as carbon dioxide, hydrogen sulfide, methane, and even oxygen. Sodium chloride, on the other hand, is a salt that dissolves into ions (Na+ and Cl−) and is not a gas. Because the list mixes actual gases with a non-gas substance, the statement is not correct. In water, you can have the dissolved gases mentioned, but sodium chloride is not a gas.