An organic functional group which can likely decolorize ammoniacal silver nitrate is?
alkene
alkane
alkyne
alkanol
Correct answer is C
Terminal alkynes react with Tollens reagent (ammoniacal silver nitrate solution) to form silver alkynides as a white precipitate, whereas internal alkynes do not react with Tollens reagent.
Zn + 2HCL → ZnCl\(_2\) + H\(_2\) What happens to zinc in the above reaction?
oxidized
a reactant
reduced
a metal
Correct answer is A
-Zn is a reducing agent, HCl is an oxidizing agent.
-the zinc is oxidized
Low temperature and high pressure
Low temperature and low pressure
high temperature and low pressure
high temperature and high pressure
Correct answer is D
high temperature and high pressure favor the highest yield for N\(_2\)O\(_4\)
high temperature favours the production of the reactant since it is endothermic, while high pressure favours the side involving a decrease in volume.
An organic compound with fishy smell is likely to have a general formula?
RCONHR\(^1\)
RCONH\(_2\)
RNH\(_2\)
RCOR\(^1\)
Correct answer is C
Amines possess a characteristic ammonia smell, liquid amines have a distinctive "fishy" and foul smell.
-Amine. R-NH2
Using the metal activity series, the metal that can liberate hydrogen gas from steam is?
iron
copper
tin
lead
Correct answer is A
Iron reacts with steam to form iron oxide and hydrogen gas.