This question is about halide ion tests.
Table 1
|
Solubility in dilute ammonia |
Solubility in concentrated ammonia |
A |
insoluble |
insoluble |
B |
insoluble |
soluble |
C |
soluble |
insoluble |
D |
soluble |
soluble |
State which pair of responses helps to confirm the identity of the anion from Table 1.
Chemical tests can be used to distinguish between different organic molecules.
State the chemical tests and any observations a student could use to distinguish between the following molecules.
CH3CH2CH2CH2CH2OH and CH3C(CH3)(OH)CH2CH3
Three qualitative tests are carried out on a solution of an unknown compound.
Test 1: On heating with NaOH (aq), a pungent smelling gas evolves which turns red litmus paper blue.
Test 2: On addition of AgNO3 (aq), a white precipitate forms which is soluble in dilute NH3(aq).
Test 3: On addition of Na2CO3 (aq), there is no visible reaction.
State the identity of the unknown compound.
Under certain conditions, butan-1-ol can be oxidized to the compound with infrared spectrum shown in Figure 1.
Figure 1
State the name of the compound that has produced the spectrum shown in Figure 1.
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