Reactivity of Magnesium with Acids

The video tutorial explains the reaction between magnesium (Mg) and hydrochloric acid (HCl), identifying it as a single displacement reaction where magnesium replaces hydrogen. The feasibility of the reaction is confirmed using the activity series, showing magnesium's higher reactivity compared to hydrogen. The tutorial then demonstrates how to balance the chemical equation, ensuring the charges and number of atoms are equal on both sides. Finally, the states of matter for each component in the reaction are identified, with magnesium as a solid, hydrochloric acid and magnesium chloride as aqueous, and hydrogen as a gas.

What type of reaction occurs when magnesium reacts with hydrochloric acid?

• Double replacement reaction

• Synthesis reaction

• Single replacement reaction

• Decomposition reaction

In the reaction between magnesium and hydrochloric acid, what does magnesium replace?

• Chlorine

• Oxygen

• Hydrogen

• Nitrogen

What is formed when magnesium replaces hydrogen in hydrochloric acid?

• Magnesium nitrate

• Magnesium chloride

• Magnesium oxide

• Magnesium sulfate

Why is magnesium able to replace hydrogen in the reaction with hydrochloric acid?

• Magnesium is a noble gas

• Magnesium is less reactive than hydrogen

• Magnesium is more reactive than hydrogen

• Magnesium and hydrogen have the same reactivity

What tool is used to determine if magnesium can replace hydrogen in the reaction?

• Molecular model

• pH scale

• Activity series of metals

• Periodic table

What is the ionic charge of magnesium when it forms an ionic bond?

• 1-

• 1+

• 2-

• 2+

How many chlorine atoms are needed to balance the charge of one magnesium ion in magnesium chloride?

• One

• Two

• Three

• Four

What coefficient is needed in front of HCl to balance the chemical equation?

• 3

• 4

• 2

• 1

What state is magnesium in during the reaction with hydrochloric acid?

• Aqueous

• Solid

• Liquid

• Gas

What is the state of hydrogen after the reaction with magnesium and hydrochloric acid?

• Aqueous

• Liquid

• Gas

• Solid