Chemistry 1.25: Unit 6 Wrap-Up

Kinetic Theory states that atoms and molecules are constantly in:

What phase will $$CO_2$$  be in at 15 atm and $$-40\degree C$$  

The presence of which type of intermolecular forces in a liquid will lead to the highest boiling point?

Which type of solid has the weakest forces holding it together?

When a solute such as salt is added to a solvent such as water, the temperature at which the solution freezes becomes:

Which of these compares moles of solute to the mass of a solvent?

Salt (NaCl) is added to water. What is the freezing point of the solution if the molality is 2.25 mol/kg?

Kf = 1.86

i = 2

Which is the correct $$K_{eq}$$  for this reaction:

$$2NO\left(g\right)\ +\ 2H_2\left(g\right)\ \leftrightarrow\ N_2\left(g\right)\ +\ 2H_2O\left(g\right)$$  

Use the equation and the concentrations given to calculate $$K_{eq}$$  :

$$K_{eq}\ =\ \frac{\left[N_2\right]\left[H_2O\right]^2}{\left[NO\right]^2\left[H_2\right]^2}$$  

$$\left[NO\right]\ =\ 2\ M$$  

$$\left[H_2\right]\ =\ 2\ M$$  

$$\left[N_2\right]\ =\ 1.5\ M$$  

$$\left[H_2O\right]\ =\ 3\ M$$  

If $$K_{eq}\ =\ 0.84$$  are there more products or reactants present at equilibrium?

$$H_2\left(g\right)\ +\ I_2\left(g\right)\ \leftrightarrow\ 2HI\left(g\right)$$  

This system is at dynamic equilibrium. What happens if you increase the concentration of HI(g)?

$$CaCO_3\left(s\right)\ \leftrightarrow\ CaO\left(s\right)\ +\ CO_2\left(g\right)$$  

This system is at dynamic equilibrium. What happens when you remove some of the CaO from the reaction chamber?

What is meant by the rate of reaction?

What does the "hill" represent in an energy diagram?

What would decrease the rate of the formation of ammonia $$\left(NH_3\right)$$  ?

$$N_2\left(g\right)\ +\ 3H_2\left(g\right)\ \leftrightarrow\ 2NH_3\ \left(g\right)\ +\ heat$$  

What effect would a catalyst have on the reaction?