1021SCG Quiz Buster 3 T1 2022

What is the molecular geometry of NH₃?

• Trigonal pyramidal  

• Bent 

• Trigonal bipyramidal  

• Tetrahedral

Using the following diagram as a reference, what physical change is occurring when a substance at -60 °C under 10,000 kPa has its pressure increase to 200,000 kPa?

• Deposition

• Freezing

• Melting

• Sublimation

What is the main intermolecular force between water molecules?

• Hydrogen bonding 

• Dispersion Forces 

• Covalent  

• Dipole-Dipole  

The pressure of 375mL of Argon is 70kPa. What is the pressure if the volume is reduced to 250mL?

• 1430 kPa 

• 22.4 kPa 

• 320 kPa 

• 105 kPa 

The reaction of 200ml of CH₄ gas with 400 ml of O₂ gas, will produce what volume of CO₂ gas assuming pressure and temperature are kept constant?

CH_{4 (g)} + 2O_{2 (g)} -> CO_{2 (g)} + 2H₂O _(g)

• 100ml

• 200ml

• 400ml

• 600ml

Which of the following is paramagnetic?

• F₂

• F₂⁺

• Ne₂

• He₂

The density of a gas that has a molar mass of 80g/mol under standard conditions is: 

• 2.3 g/L

• 1.4 g/L

• 3.4 g/L

• 3.6 g/L

How many pi bonds are in the following molecule?

• 3

• 2

• 1

• 0

 5 moles of nitrogen, 2 moles of oxygen and 1 mole of argon in a container. The total pressure is 2 atm. Assuming fixed volume and temperature, the partial pressure of nitrogen is:

• 12.5 atm

• 1.2 atm

• 1.25 atm

• 0.125 atm

Which of the following bond orders has the longest bond distance?

• 3

• 2

• 1.5

• 1