Choose the correct statements from the following: A. \( Mn_2O_7 \) is an oil at room temperature B. \( V_2O_4 \) reacts with acid to give \( VO_2^{2+} \) C. \( CrO \) is a basic oxide D. \( V_2O_5 \) does not react with acid Choose the correct answer from the options given below:
Analysis of each statement to identify correct ones:
Statement A: \(Mn_2O_7\) is an oil at room temperature. This statement is accurate. Manganese heptoxide (\(Mn_2O_7\)) is a volatile, oily green liquid at ambient temperature, known as a potent oxidizing agent prone to explosive decomposition.
Statement B: \(V_2O_4\) reacts with acid to give \(VO_2^{2+}\). This statement is inaccurate. \(V_2O_4\), vanadium(IV) oxide, does not react with acid to produce \(VO_2^{2+}\) ions. Vanadium compounds typically exhibit different oxidation states through redox reactions.
Statement C: \(CrO\) is a basic oxide. This statement is accurate. Chromium(II) oxide (\(CrO\)) exhibits basic properties, reacting with acids to form salts and water, characteristic of basic oxides.
Statement D: \(V_2O_5\) does not react with acid. This statement is inaccurate. Vanadium(V) oxide (\(V_2O_5\)) is an amphoteric oxide that reacts with both acids and bases, forming various vanadate salts.
The correct statements are A and C. Therefore, "A and C only" is the correct selection.
