Gary Horner Solutions for Chapter: Movement, Exercise 12: Demonstration

Author:Gary Horner

Gary Horner Chemistry Solutions for Exercise - Gary Horner Solutions for Chapter: Movement, Exercise 12: Demonstration

Attempt the practice questions on Chapter 10: Movement, Exercise 12: Demonstration with hints and solutions to strengthen your understanding. MYP Chemistry A concept-based approach Years 4&5 solutions are prepared by Experienced Embibe Experts.

Questions from Gary Horner Solutions for Chapter: Movement, Exercise 12: Demonstration with Hints & Solutions

EASY
MYP:4-5
IMPORTANT

Demonstration

Electrolysis of molten zinc chloride

Safety

• This demonstration should be performed in a fume hood.

• Wear safety glasses.

• Follow correct disposal procedures.

Materials

• Large porcelain crucible

15 g of zinc chloride

• Tripod stand and clay-pipe triangle

• Bunsen burner

• Retort stand and clamp

• 2 carbon electrodes

• Connecting wires and crocodile clips

• 1 light bulb

• DC power supply (6 V) 

Method 
1. Set up the apparatus as shown in the diagram. 
Question Image 
2. Light the Bunsen burner, open the gas sleeve to produce a blue roaring flame and heat continuously until a molten solution of zinc chloride is produced. 
What did you observe about the light bulb as the zinc chloride solid began to melt and become molten? Support your answer with scientific reasoning.

EASY
MYP:4-5
IMPORTANT

Demonstration

Electrolysis of molten zinc chloride

Safety

• This demonstration should be performed in a fume hood.

• Wear safety glasses.

• Follow correct disposal procedures.

Materials

• Large porcelain crucible

15 g of zinc chloride

• Tripod stand and clay-pipe triangle

• Bunsen burner

• Retort stand and clamp

• 2 carbon electrodes

• Connecting wires and crocodile clips

• 1 light bulb

• DC power supply (6 V) 

Method 
1. Set up the apparatus as shown in the diagram. 
Question Image 
2. Light the Bunsen burner, open the gas sleeve to produce a blue roaring flame and heat continuously until a molten solution of zinc chloride is produced. 
Construct balanced half-equations for the reactions occurring at the anode and the cathode, and the overall chemical equation.