Chemistry 2nd semester final

The safest way to dilute concentrated sulfuric acid is to add – 

• a series of small volumes of water to the acid while stirring
• dilute sulfuric to a small volume of concentrated acid
• the acid to water slowly while stirring constantly
• the acid to a small volume of water and then add more water

Which of the following is the correct formula for hydrochloric acid?

• HClO₄
• HClO₃
• HCl
• HClO₂

Hydrochloric acid is added to a solution of sodium hydroxide to demonstrate a neutralization reaction.  What would be the pH of this solution once it is completely neutralized?

• 0
• 7
• 14
• 10.5

The formula H2SO4 is representative of which of the following?

• A catalyst
• A base
• An acid
• An organic compound

Nitric acid is a stronger acid than hydrofluoric acid.  Which of the following explains why nitric acid is considered the stronger acid?

• Hydrofluoric acid breaks apart when dissolved while nitric acid does not
• Nitric acid dissociates more completely into its ions in solution
• Hydrofluoric acid produces hydroxide ions instead of hydrogen ions
• The hydrogen ions in nitric acid are of a different hydrogen isotope

If the number of moles of gas inside of a container increases, what will happen to the volume of the container if both temperature and pressure are kept constant?

• The volume will increase.
• The volume will decrease
• The volume will remain constant.
• None of the above.

At which of the following temperatures would the motion of all of an objects particles come to a complete stop?

• 0 K
• 0^oC
• 373 K
• -100^oC

Which of the following is not a point made by the kinetic molecular theory of gases?

• Gases are composed of tiny particles.
• The speed of gas particles is related to the temperature of the system.
• Gas particles are always moving with high speed random motion.
• Gas particles do not have mass or take up any space.

Charles’ Law states that if a given quantity of gas is held at a constant pressure, then its volume is directly proportional to the absolute temperature. This law explains why —

• the pressure of a gas increases when volume decreases
• a gas-filled balloon expands when it is heated 
• solids require heat in order to change into gases
• some gases only react with each other at high temperatures

A man who was sleeping wakes up because he hears the smoke alarm go off in his house.  Before opening the bedroom door, the man feels the door to see whether it is warm.  He is assuming that heat would be transferred through the door by – 

• conduction
• convection
• radiation
• compression