A student placed a small piece of magnesium ribbon in a

Last updated: 7/24/2022

A student placed a small piece of magnesium ribbon in a conical flask and added 60 mL hydrochloric acid. The student observed that when the hydrochloric acid came into contact with the magnesium ribbon, bubbles formed indicating the release of hydrogen gas. The magnesium dissolved and magnesium chloride solution formed. Based on the student's observations, which type of reaction occurred? Mg + 2HCI → MgCl₂ + H₂ A. combustion reaction B. decomposition reaction C. single replacement reaction D. double replacement reaction