While assigning R, S configuration, the correct order of priority of groups attached to chiral carbon atom is
CONH2 > COCH3 > CH2OH > CHO
CONH2 > COCH3 > CHO > CH2OH
COCH3 > CH2OH > CHO > CH2OH
CHO > CH2OH > COCH3 > CONH2
How many Faradays of electricity are required to deposit 10g of calcium from molten calcium chloride using inert electrodes? ( Molar mass of calcium = 40g mol-1)
0.5 F
1F
0.25 F
2 F
What is the general molecular formula of the product obtained on heating lanthaniods (Ln) with sulphur?
LnS
LnS3
Ln3S2
Ln2S3
In the cell represented by
Pb(s)|Pb2+(1M) || Ag+(1M)| Ag(s), the reducing agents is
Pb2+
Pb
Ag
Ag+
B.
Pb
Pb(s)|Pb2+(1M) || Ag+(1M)| Ag(s), the reducing agents is Pb because it readily gets oxidised to Pb and helps in the reduction of Ag+ to Ag (s).
Pb(s) → Pb2+(1M) + 2e-
Ag+ + e- → Ag(s)
How is sodium chromate converted into sodium dichromate in the manufacture of potassium dichromate from chromite ore?
By the action of concentrated sulphuric acid
By roasting with soda ash
By the action of sodium hydroxide
By the action of limestone