Whoops, just saw that I wasn't supposed to post this here. Apologies.
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Predicting which Gas formed?
- Thread starter rguil15
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can you give a little more detail. What were the conditions of the experiment? was there a nitrate involved? Was there an active metal? Without a little more detail it is difficult to answer your question.
dsoz
dsoz
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It should be a derivation of NOx (NO or NO2) (colored gas) if I recall correctly.
Sadly to say, these types of questions comes with lots of practice problems and lab work to be able to get a feel for what products are formed.
Some rules you should have a general idea that'll help you.
1. Solubility rules
2. Acid + alkali/alkaline earth metals usually give off H2
3. Acid + other metals usually give off their corresponding reduced form of nitrates (your example)
4. General Acid and Base Reactions
There are more but I can't think of any. -_-
I know on AP chem there is a practice section on naming chemical reactions.
They'll ask something like silver nitrate is mixed with sodium chloride and you're suppose to know that it's the following equation.
AgNO3(aq)+NaCl (aq)-> AgCl (s) + NaNO3 (aq)
If you can pick an AP study guide (go to a Barnes & Noble and hang for a few hours if you don't want to buy it), it should have a section on it.
Sadly to say, these types of questions comes with lots of practice problems and lab work to be able to get a feel for what products are formed.
Some rules you should have a general idea that'll help you.
1. Solubility rules
2. Acid + alkali/alkaline earth metals usually give off H2
3. Acid + other metals usually give off their corresponding reduced form of nitrates (your example)
4. General Acid and Base Reactions
There are more but I can't think of any. -_-
I know on AP chem there is a practice section on naming chemical reactions.
They'll ask something like silver nitrate is mixed with sodium chloride and you're suppose to know that it's the following equation.
AgNO3(aq)+NaCl (aq)-> AgCl (s) + NaNO3 (aq)
If you can pick an AP study guide (go to a Barnes & Noble and hang for a few hours if you don't want to buy it), it should have a section on it.
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It is the nitric acid that gives it away. Copper does not react with most common acids, but with nitric acids, it will get oxidized and make NO2 gas (brown gas found in photo-chemical smog).
Copper does not react with hydrochloric, sulfuric, or acetic acids to any great extent. More reactive metals (zinc, magnesium, iron, etc.) will react with these other acids to produce hydrogen gas.
These are just some things that you learn by experience. I don't know how you would learn it besides from a chemistry class.
Sorry I could not help,you more.
dsoz
Ah, I see what it is now. Had to dig through the textbook but I found the hard and fast rule.
"Only those metals above hydrogen in the activity series are able to react with acids to form H2".
Cu is literally the first metal below Hydrogen in the activity series, that's a tricky question.
"Only those metals above hydrogen in the activity series are able to react with acids to form H2".
Cu is literally the first metal below Hydrogen in the activity series, that's a tricky question.
