Question 1: Which of the following correctly shows a neutralization reaction between a hydronium ion and a hydroxide ion?
- H+ + H2O H3O+
- H2O H+ + OH-
- H3O+ + OH- 2 H2O
- H2O + NH3 OH- + NH4+
Question 2: If 1.20 moles of an ideal gas occupy a volume of 18.2 L at a pressure of 1.80 atm, what is the temperature of the gas, in degrees Celsius?
- -125 C
- 59.5 C
- 273 C
- 332 C
Question 3: Which describes nuclear power plants?
- They generate power directly from nuclear reactions.
- They supply over 50% of the nation's power needs.
- Compared to fossil fuels, they require much less fuel.
- They have more atmospheric pollutants compared to fossil fuels.
Question 4: A student dissolves 4.5 g of sodium chloride (NaCl) into 75 g of water (H2O). Which of the following statements is correct regarding the resulting solution when it is compared to the pure solvent?
- Both the vapor pressure and the boiling point will increase.
- The boiling temperature and the freezing temperature will decrease.
- The freezing temperature will increase and the vapor pressure will decrease.
- The vapor pressure will decrease and the boiling temperature will increase.
Question 5: When 1.5 L of methane gas combust in an excess of oxygen at standard temperature and pressure, how many liters of water vapor will be produced
CH4 (g) + 2O2 (g) CO2 (g) + 2H2O (g)