Hard to memorise Flashcards
1
Q
Halogen+water变
A
Acid+acid
2
Q
Potassium/sodium carbonate
A
Do not decompose on heating
3
Q
Ammonium carbonate decompose to
A
Ammonia, Carbon dioxide and water
4
Q
Potassium/sodium nitrite decompose to
A
Nitrate salt and oxygen gas
5
Q
Ammonium nitrate decompose to
A
Nitrous oxide and water
6
Q
Use nitric acid with metal
A
will give complicated mixture of products
7
Q
How to get oxygen gas
A
Decomposition of hydrogen peroxide with presence if manganese 4 oxide
Or
Heating nitrate salts
8
Q
How to get ammonia gas
A
Heat mixture of ammonium salts/ammonia solution + alkali
9
Q
How to get chlorine gas
A
Heat mixture of manganese4 oxide +conc hcl
10
Q
How to get hcl gas
A
Heat mixture of NaCl + conc sulphuric acid
11
Q
How to get SO2 gas
A
Reaction btw sodium sulphite +acid
12
Q
How to get nitrogen dioxide
A
Heat nitrate salts
