Using ideal gas equation,
Here,
P denotes pressure
V denotes volume
n denotes number of moles of gas
R denotes gas constant
T denotes temperature
The values at STP will be:
P=1 atm
T=25 C+273 K =298.15K
V=663 ml=0.663L
R=0.0821 atm L mol ⁻¹
Mass of gas given=1.25 g g
Molar mass of gas given=?
Putting all the values in the above equation,
Molar mass of the gas=46.15
Answer:
SEPARATION SCHEME FOR CATIONS
GIVEN CATIONS :
Step 1: Add of
to the mixture solution
Result : This would cause a precipitate of to be formed
Reaction :
Step 2 : Next is to remove the precipitate and add to the remaining
solution in the presence of of HCl
Result : This would cause a precipitate of to be formed
Reaction :
Step 3: Next remove the precipitate then add of aqueous
, process the solution in a centrifuge,when the
process is done then sort out the precipitate from the solution
Now this precipitate is and the remaining solution
contains
Next take out the precipitate to a different beaker and add HCl
to it this will dissolve it, then add a drop of this will
form a precipitate which will have the color of
blood indicating the presence of
Reaction :
Now the remaining mixture contains
Explanation:
