Determining Avogadro's Number Through Electrolysis and Gas Ratios

Determining Avogadro's Number Through Electrolysis and Gas Ratios

Assessment

Interactive Video

Physics, Chemistry, Science

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explores the value of Avogadro's number, 6.02 x 10^23, and demonstrates an experimental method to determine it using electrolysis. The process involves converting water into hydrogen and oxygen, requiring data on current and time to produce hydrogen gas. The experiment confirms the mole ratio of hydrogen to oxygen as 2:1, validating the composition of water as H2O. The experimental value closely matches the theoretical value, showcasing a practical approach to understanding Avogadro's number.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of Avogadro's number as mentioned in the video?

6.02 x 10^25

6.02 x 10^24

6.02 x 10^23

6.02 x 10^22

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What device is used in the experiment to separate water into hydrogen and oxygen?

A spectrometer

An electrolysis device

A centrifuge

A distillation apparatus

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What two pieces of information are needed to calculate Avogadro's number in the experiment?

Temperature and pressure

Density and viscosity

Current flow and time

Volume and mass

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mole ratio of hydrogen to oxygen observed in the experiment?

2:1

1:1

3:1

1:2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the experimental value of Avogadro's number compare to the theoretical value?

It is significantly lower

It is significantly higher

It is very close

It is exactly the same