Question

Random lab questions that I don't even know what the heck they are asking e_e

1. Describe how you could tell if a colorless gas is:
a. \(CO_{2}\)
b. \(H_{2}\)

How would \(CO_{3}+Ca(OH)_{2}\) react?
i.e. \(CO_{3}+Ca(OH)_{2}\rightarrow\text{??}\)

Answer 1

You need to know some simple gas reactions.

This video helps on this:

https://www.youtube.com/watch?v=LiAvDpl5aJA

You should find a 'pop' test for H2
A glowing splint test for O2
and a limewater test for CO2.

The second question I think you mean how does CO2 (rather than CO3) react with Ca(OH)2 (limewater?)
A carbonate will be formed which is why you see the limewater turn from clear to milky white and the other product is water.

Answer 2

\(\color{blue}{\text{Originally Posted by}}\) @mww
The second question I think you mean how does CO2 (rather than CO3) react with Ca(OH)2 (limewater?)
A carbonate will be formed which is why you see the limewater turn from clear to milky white and the other product is water.
\(\color{blue}{\text{End of Quote}}\)

Yeah, sorry, I meant \(CO_{2}\). My bad haha --
A carbonate? So then the OH will separate from the \(CaOH_{2}\)

Answer 3

The full reaction is
CO2 + Ca(OH)2 --> CaCO3 + H2O

Answer 4

Oh, right, that's a hydroxide. My bad

Answer 5

Yeah your teacher should do these pracs in class with you, more easier to learn that way.

Answer 6

True.
Thanks for helping out, though ☺