Composition of Water by Weight Electrolysis (55x90cm)
Description
The “Composition of Water by Weight Electrolysis” (55x90 cm) educational chart features a detailed visual explanation of the classic experiment to determine water's composition using the electrolysis process, ideal for chemistry classrooms and laboratories.
Chart Features
Laminated, multicolor 55x90 cm design for prominent classroom use.
Clearly depicts the experimental setup:
An electrolytic cell with water acidified (typically with dilute sulfuric acid) to improve conductivity.
Platinum or graphite electrodes connected to a power supply, immersed in the electrolyte.
Shows the splitting of water (
H
2
O
H
2
O) into hydrogen and oxygen gases:
2
H
2
O
(
l
)
→
2
H
2
(
g
)
+
O
2
(
g
)
2H
2
O(l)→2H
2
(g)+O
2
(g)
Hydrogen gas is collected at the cathode (negative electrode) and oxygen at the anode (positive electrode), typically in separate graduated test tubes or collection tubes.
Demonstrates, through labeled diagrams and explanatory notes, that:
The volume of hydrogen gas produced is double that of oxygen, confirming the 2:1 molar ratio in water.
By measuring and weighing the amounts of gases, the chart helps illustrate the composition of water by weight (about 88.8% oxygen, 11.2% hydrogen by mass).
May include summary tables or equations for quick reference and comprehension.
Educational Value
Visualizes the foundational stoichiometric and molecular principles behind water's formula (
H
2
O
H
2
O) and chemical composition.
Supports learning about electrochemical processes, molecular ratios, and gas laws.
Essential for teaching practical laboratory skills and reinforcing theoretical chemistry concepts, especially in secondary and undergraduate courses.
This poster is a vital resource for illustrating a key experiment in chemistry and the fundamental composition of water.
Specifications
| Model No. | N-C069 |
|---|
