Answer:
H2TeO3
HClO2
HClO
Explanation:
Ka is the value of the equilibrium constant of the acids. As higher is it's valued, as higher is the value of the concentration of H+, so more acidic is the solution. Another way to determine the acidic is to obtain the pKa = -logKa, in this case, as larger the pKa, as less acidic is the solution. The values of pKa can be found at analytic tables.
First row:
H2, pKa = 15.74
TeO4, pKa = 11
H2TeO3, pKa1 = 2.7
More acidic = H2TeO3
Second row:
HClO2, pKa = 1.94
HClO, pKa = 7.40
More acidic = HClO2
Third row:
HClO, pKa = 7.40
HBrO, pKa = 8.55
More acidic = HClO
In this situation, we can use the ideal gas equation which is PV = nRT
P = Pressure (atm)
V = Volume (L)
n = moles (mol)
R = constant (0.08206 atm-l/mol-K)
T = Temperature (K) ---> C + 273.15 = K
PV = nRT
n = PV/RT
= (7atm)(15L) / (0.08206 atm-l/mol-K)(23 + 273.15)
= 4.32 mol
Hope that helped!!!
I think the correct answer among the choices listed above is option C. In order for a substance to be able to dissolve in water, t<span>here must be enough energy to break the chemical bonds in the water molecules. This energy between the bond of solvent molecules should be overcome by solute-solvent interaction.</span><span />
