Without know the experiment you did I must guess about some of these.
1. Most nitrates decompose when heated to give oxygen gas.
2. I don't knopw either unless you want to make sure the solution is basic.
3. How would you know what gas is liberated if you don't test it. In this case you should know (or determine in the experiment) that strong bases like Ca(OH)2 + ammonium salts liberate gaseous NH3.
Hi, I have few questions from a chemistry lab that i did,
1) I'm not sure whats the point of heating a nitrate (NaNO3)
2) I'm not sure why you add NaOH to NaNO3 after it has dissolved in water
3) I'm not sure why do we have to test what gas is produced from calcium hydroxide and ammonium chloride
All of these questions are related because it is one lab, not multiple. Thanks.
4 answers
Hi, for #3 i mean why do we have to heat calcium hydroxide with ammonium chloride?
The rate of decomposition of the ammonium salt to produce gaseous NH3 is so slow at room temperature that the test for NH3 might be missed; therefore, the solution is heated in order to increase the rate of reaction. For many reactions the rule of thumb is that the rate is doubled for every 10 C increase.
thanks!
2 answers