Creating and testing unknown gas

Chemistry Level 2

People create a gas $Z$ in order to test its properties. Therefore, they make a setup according to the picture below: After waiting for all the chemical reactions to be completely done, which of the following best describes what happened?

Bonus: Write all the chemical reactions which happened.

Go to Problem: Identify $Z$ if you know what is $Z$ .

In test tube (2), the precipitate is red-brown. However, nothing happens in test tube (1). In test tube (1), the precipitate is yellow. Meanwhile, the precipitate in test tube (2) is dark brown, and the solution loses its purple color. In test tube (1), the precipitate is yellow. Meanwhile, the precipitate in test tube (2) is white, and the solution loses its purple color. In test tube (1), the precipitate is white. However, nothing happens in test tube (2).

1 solution

Sunghyun Lee
Jan 10, 2021

In the test tube (1), silver acetylide( $Ag_{2}C_{2}$ ) is produced. Also, in the test tube (2), manganese dioxide( $MnO_{2}$ ) is produced, which is dark brown.

Creating and testing unknown gas

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