Answer: Option C. The concentration of the reactants is less than that of the product d
Explanation:
Answer:
It will not achieve the desired separation
Explanation:
Chromatography is a separation method that involves the use of a stationary phase and a mobile phase. The stationary phase is immobile, in the particular instance of this question, the stationary phase is paper. The mobile phase is the appropriate solvent, in this case, a salt-water solution.
If the level of solvent is above the dye spots, it will introduce error into the separation. The solvent (if volatile) may evaporate without drawing up and separating the solute. Secondly, the solvent may simply dissolve the spots without achieving any meaningful separation of the components in the system. This second reason is particularly why the salt solution must be below the dye spots in this chromatographic separation.
Answer:
Real relationship goals in chemistry is simple "emotion" that two people get when they share a special connection.
Explanation:
The given reaction equation is as follows.

Hence, initial moles of HCN will be as follows.
Moles = Molarity × Volume
= 
= 48.072 mol
Now, we will calculate the volume of NaOH as follows.

= 70.57 ml
At the equivalence point, moles of both HCN and NaOH will be equal. And, total volume will be as follows.
120 ml + 70.57 ml = 190.57 ml
Initial concentration of
is as follows.

= 0.25 M
Now, the equilibrium equation will be as follows.

Initial: 0.25
Equilbm: 0.25 - x x x
Expression to find
is as follows.

We know that,
= antilog (-9.21)
= 
As,
x =
Now, we will calculate the pH as follows.
pOH =
as pOH = 2.698
And, pH + pOH = 14
pH = 14 - 2.698
= 11.30
Thus, we can conclude that pH at equivalence is 11.30.