Regents Chemistry Exam August 2025 Question 25 25  Where do oxidation and reduction occur in an electrochemical cell? (1)  Oxidation occurs at the anode and reduction occurs at the cathode. (2)  Oxidation occurs at the anode and reduction occurs in the salt bridge. (3)  Oxidation occurs at the cathode and reduction occurs at the anode. (4)  Oxidation occurs at the cathode and reduction occurs in the salt bridge. Solution: We can use a mnemonic to memorize this. Red Cat and An

Regents Chemistry Exam August 2025 Question 24 24  Which formula represents an organic compound? (1) PCl3 (3) CH3Cl (2) BrCl (4) NH4Cl Solution: An organic compound must have carbon in its formula. Choice 3 is the correct answer choice. LINKS: Regents Chemistry Guides and Solutions Chemistry Tutoring More Regents Chemistry Practice