Which of the following statements are correct about the reaction between the copper metal and dilute — p Block Elements Chemistry Question
Question
Which of the following statements are correct about the reaction between the copper metal and dilute HNO3?<br>(I) The principal reducing product is NO gas<br>(II) Cu metal is oxidised to Cu2+(aq.) ion which is blue in colour.<br>(III) NO is paramagnetic and has one unpaired electron in antibonding molecular orbital<br>(IV) NO reacts with O2 to produce NO2 which is linear in shape<br>Choose the correct statements:
💡 Solution & Explanation
Step 1: Phosphorus trichloride (PCl3) has phosphorus in the +3 oxidation state and reacts vigorously with water. Step 2: Complete hydrolysis of PCl3 occurs without any change in the oxidation state of phosphorus, yielding phosphorous acid (H3PO3) and hydrochloric acid (HCl): PCl3 + 3H2O -> H3PO3 + 3HCl. Step 3: Therefore, the hydrolysis products are H3PO3 and HCl, corresponding to option (a).