Grasp the tube as close as possible to the end being inserted. Slide the glass with a twisting motion and never push. Keep your hands together as close together as possible in order to reduce any torque. HCl can be prepared by adding concentrated H 2 SO 4 to KCl. I 2 and Br 2 .
Oxyacids have the acidic proton attached to an oxygen atom.
Draw Lewis structures for perchloric, chloric, chlorous and hypochlorous acids. The Lewis structures should obey the octet rule. Write formal charges, if they are present. Using the Lewis structures you have drawn, explain why perchloric and chloric acids are strong acids while chlorous and hypochlorous acids are weak. Chlorine ranks third in electronegativity.