Gravimetric Analysis and Precipitation

Gravimetric Analysis and Precipitation

Assessment

Interactive Video

Chemistry, Mathematics, Science

9th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial covers gravimetric analysis, focusing on the precipitation method. It explains how to isolate an unknown by precipitation and filtration, dry the solid product, and measure its mass. The video includes an example of precipitating lead ions using sulfate and demonstrates stoichiometry calculations to determine the mass of solid products. Practice problems are provided to reinforce learning, and the video concludes with a review of key principles and calculations.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary basis of gravimetric analysis?

Volume

Mass

Temperature

Pressure

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a common type of gravimetric analysis?

Chromatography method

Spectroscopy method

Precipitation method

Titration method

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the precipitation method, what is the purpose of heating to constant mass?

To change the chemical composition

To ensure all water is removed from the sample

To dissolve the precipitate

To increase the reaction rate

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which ion is used to precipitate lead ions in the example provided?

Carbonate

Chloride

Nitrate

Sulfate

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in performing stoichiometry calculations for a reaction?

Write a balanced equation

Calculate the mass of the product

Measure the volume of reactants

Determine the limiting reactant

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the reaction between NaOH and MgCl2, which reactant is the limiting one?

MgCl2

Neither is limiting

Both are limiting

NaOH

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass of magnesium hydroxide formed in the example calculation?

15 g

10 g

20 g

12 g

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