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Dan Meyers @MeyersChemistry didn't think of that 6 years 2 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience Nope...didn't think to at the time. 6 years 2 months ago Reply Retweet Favorite
Erica Posthuma @eposthuma did you check the pH of the water or resulting soln? 6 years 2 months ago Reply Retweet Favorite
Dan Meyers @MeyersChemistry room temperature and no black ppt. I considered decomp of CuCO3 into CO2 and CuO but only observe gas 6 years 2 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience I don't recall black ppt. Only light blue (CuCO3, I presume.) 6 years 2 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience True, but I think gas was being formed even at colder Ts. tried today. What T did you use? 6 years 2 months ago Reply Retweet Favorite
Tom Kuntzleman @pchemstud Any black ppt formation? 6 years 2 months ago Reply Retweet Favorite
Tom Kuntzleman @pchemstud 70oC might be hot enough to cause decomposition but I'm not sure. https://t.co/l7hgAg3SKU 6 years 2 months ago Reply Retweet Favorite
What Would NdT Do? @wwndtd If gas is made, conductivity should go up (more + ions b/c carbonate is gone). But why the gas..? 6 years 2 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience Varying Ts, up to 70, I think. 99% sure no acid added. 6 years 2 months ago Reply Retweet Favorite
Tom Kuntzleman @pchemstud How hot was the water? Are you SURE the student added water and not acid? 6 years 2 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience Using distilled water. Nothing else added, that I can think of. Student inquiry expt...no proc given. 6 years 2 months ago Reply Retweet Favorite
Tom Kuntzleman @pchemstud Was the water slightly acidic? What else was in the water? 6 years 2 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience Thank you so much Erica. It's been a great learning experience for me and my Ss this year. I can't wait to do more next year. 6 years 2 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience Hmmm...so copper (II) carbonate reacting with water to produce CO2? , any ideas? 6 years 2 months ago Reply Retweet Favorite
Dan Meyers @MeyersChemistry idk the gas was being produced after the ppt was made and the test tube shaken gently. 6 years 2 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience Thanks for trying! So...carbon dioxide. From the sodium carbonate reacting with water perhaps? 6 years 2 months ago Reply Retweet Favorite
Dan Meyers @MeyersChemistry I decided to try this. There was some bubbling and splint went out about inch into tube. 6 years 2 months ago Reply Retweet Favorite
ACS ChemClubs @ACSChemClubs Coolest thing ever! Mind blown! MT : 4D app for thanks to for the link! http://t.co/UVKv8YfXUw 6 years 2 months ago Reply Retweet Favorite
Erica Posthuma @eposthuma Awesome project to get Ss to write/think/evaluate in science -> http://t.co/1pn8VpRzY1 6 years 2 months ago Reply Retweet Favorite