Identify unkmown compound lab HELP

[noork85]

Identify unkmown compound lab HELP!

ok so i had to identify the unknown compound, which actually for me was Sodium carbonate. i don't know if i did this correctly because there was a lot of confusion with my lab partner (screwed me big time, couldn't even count drops; i will be getting a new lab partner next week!) and time constraints i wasnt able to finish it up. I asked the prof if i could repeat it and ofcourse, she said no. just ignore the unknown compound section, but is the rest of it correct?

i was supposed to find out whether the reaction is a gas, precipitate appears or disappears, or if the color changes.

and this is the complete lab
http://survival-training.survival-training.net/Library/Chemistry/Chemistry%20-%20Identification%20of%20unknown%20compound%20-%20Unknown.pdf

heres the image

is this correct?

 

[sjb-2812]

Seems to be a similar discussion at http://www.chemicalforums.com/index.php?topic=56153 ?

 

[noork85]

not similar, it is. its mine, i posted on various sites so i can actually get an answer because no seems to be responding anywhere.

please!help! its due tomorrow!