Answer:
2.8 m
Explanation:
Step 1: Given data
Step 2: Calculate the molality of the solution
Molality is a unit used to express the concentration of a solution. It is equal to the moles of solute divided by the kilograms of solvent.
m = moles of solute / kilograms of solvent
m = 0.210 mol / 0.075 kg
m = 2.8 mol/kg = 2.8 m
K = 2.96x10⁻¹⁰
Based on the initial reaction:
N2O4 ⇄ 2NO2; K = 1.5x10³
Using Hess's law, we can multiply this reaction changing K:
3 times this reaction:
3N2O4 ⇄ 6NO2; K = (1.5x10³)³ =3.375x10⁹
The inverse reaction has a K of:
6NO2 ⇄ 3N2O4 K = 1/3.375x10⁹;
Fe-- solid
steam -gas
diamond -solid
mercury - liquid
.........................:)
sodium
this is because sodium is neutral ....hence the pH formed will be 7
