Answer: P= 1.64 atm
Explanation: solution attached.
Use Ideal gas law
PV= nRT
Derive for P
P= nRT/V R= 0.08205 L.atm/mol.K
Substitute the values.
Answer: all of them duuuuuuuuuuuuuuuuuuuuuuuuuuuuu
Answer : Both solutions contain
molecules.
Explanation : The number of molecules of 0.5 M of sucrose is equal to the number of molecules in 0.5 M of glucose. Both solutions contain
molecules.
Avogadro's Number is
=
which represents particles per mole and particles may be typically molecules, atoms, ions, electrons, etc.
Here, only molarity values are given; where molarity is a measurement of concentration in terms of moles of the solute per liter of solvent.
Since each substance has the same concentration, 0.5 M, each will have the same number of molecules present per liter of solution.
Addition of molar mass for individual substance is not needed. As if both are considered in 1 Liter they would have same moles which is 0.5.
We can calculate the number of molecules for each;
Number of molecules =
;
∴ Number of molecules =
which will be = 
Thus, these solutions compare to each other in that they have not only the same concentration, but they will have the same number of solvated sugar molecules. But the mass of glucose dissolved will be less than the mass of sucrose.
A scientific theory is a well tested explanation of a natural phenomenon.
Answer:
ΔpH = 1.25
Explanation:
Using Henderson-Hasselbalch formula:
pH = pka + log [CH₃COONa] / [CH₃COOH]
pH = 4.74 + log [0.112] / [0.112]
<em>pH = 4.74</em>
The reaction of sodium acetate (CH₃COONa) with HCl is:
CH₃COONa + HCl → CH₃COOH + NaCl
<em>Producing acetic acid, </em>CH₃COOH.
If 0.1mol of HCl reacts the final moles of CH₃COONa are:
0.112mol - 0,1 mol = 0.012mol
Moles of acetic acid are:
0.112mol + 0,1 mol = 0.212mol
Using Henderson-Hasselbalch formula:
pH = pka + log [CH₃COONa] / [CH₃COOH]
pH = 4.74 + log [0.012] / [0.212]
<em>pH = 3.49</em>
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Change in pH, ΔpH = 4.74 - 3.49 =<em> 1.25</em>
I hope it helps!