CA 4 Review

CA 4 Review

This Review will cover:

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• Acids and Bases

• Thermochemistry

Acids and Bases

Multiple Choice

Acids react with

• water to produce bases and salts
• salts to produce bases and water
• neither bases, salts nor water
• bases to produce salts and water

Multiple Choice

Which of the following statements is correct?

• Blue litmus paper turns red when placed in a base.
• Red litmus paper turns blue when placed in a base.
• Blue litmus paper stays blue when placed in an acid.
• Red litmus paper stays red when placed in a base.

Multiple Choice

An Arrhenius acid:

• donates H+ to another substance

• accepts H+ from another substance

• produces H+

• produces OH-

Multiple Choice

An Arrhenius base:

• donates H+

• accepts H+

• produces H+

• produces OH-

Multiple Choice

A Bronsted Lowry acid:

• donates H+ to another substance

• accepts H+ from another substance

• produces H+

• produces OH-

Multiple Choice

A Bronsted Lowry base:

• donates H+ to another substance

• accepts H+ from another substance

• produces H+

• produces OH-

Multiple Choice

According to the pH range given in the image,which substance is more acidic than lemon juice?

• Hydrochloric acid

• Cabbage

• Milk

• Milk Of Magnesia

Multiple Choice

What type of reation occurs between an acid and a base?

• Combustion

• Synthesis

• Neutralization

• Double Replacement

Multiple Choice

Which of the following values would represent the pH of a strong base?

• 1

• 8

• 7

• 13

Multiple Choice

Which salt is formed in a reaction between HBr and LiOH?

• LiBr

• BrLi

• NaCl

• NaOH

Multiple Choice

Predict the products of this reaction.

HCl + Ca(OH)2 -->

• NaCl

• CaCl2

• CaCl2 + H2O

• H2O

Multiple Choice

What is the conjugate base in the following reaction?

HCO₃^- + HCl → H₂CO₃ + Cl^-

• HCO₃^-

• HCl

• H₂CO₃

• Cl^-

Multiple Choice

If the [H+] of a solution is 1.0 x 10^-2 the pH is..

Hint: Use -log [H+]

• 2
• -2
• 1
• 12

Multiple Choice

What is the pH of a solution where the [H+] is 1.0 x 10^-11?

• 11

• 13

• 14

• 1

Multiple Select

Which of the following is true about weak acid?

Hint: There are 2 answers

• Acids that react partially with alkalis

• Acids that are monobasic

• Acid that produce low concentration of H⁺ ions

• Acid that dissociates partially in H⁺ ions

Multiple Choice

Which of the following is the correct definition for a strong acid?

• Partially dissociates into ions when dissolved in water and the change is not reversible

• Fully dissociates into ions when dissolved in water and the change is not reversible

• Fully dissociates into ions when dissolved in water and the change is reversible

• Partially dissociates into ions when dissolved in water and the change is reversible

Thermochemistry

Multiple Choice

What is the energy of the movement of particles in a substance?

• Potential energy
• Kinetic energy
• Thermal energy
• Temperature

Multiple Choice

At higher temperature

• particles in an object have less kinetic energy

• particles in an object move faster

• a gas contracts

• particles in ab object move slower

Multiple Choice

The temperature of a substance increases as

• the substance expands

• the substance's volume increases

• the substance's mass increases

• the average kinetic energy of its particles increases

Multiple Choice

The faster molecules move, 

• the higher the temperature
• the less temperature
• the same temperature
• I don't know

Multiple Choice

What type of reaction occurs in a hand warmer

• exothermic
• endothermic

Multiple Choice

Exothermic reactions...

• Absorb energy
• Release energy
• Release Color
• Absorb Color

Multiple Choice

In an endothermic reaction, heat is ...

• taken in or absorbed
• given out or released 

Multiple Choice

____ reactions usually feel cold.

• endothermic

• exothermic

Multiple Choice

A 500g piece of aluminum has a temperature of 7°C. What is the heat energy produced? Specific heat of Aluminum is 0.900 J/gºC.

• 3000 J

• 3000 g

• 3150 J

• 3150 g

Multiple Choice

The specific heat of aluminum is 0.21 J/g°C.  How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?

• 105 J
• 10.5 J
• 1.05 J
• 0.105 J

Multiple Choice

20 g of water. specific heat of water is 4.18 J/g°C.  temperature changes from 25° C to 20° C, how much heat energy (q) moves from the water to the surroundings?

• 400 J
• 210 J
• 80 J
• 4.18 J

Multiple Choice

Energy can not be created or destroyed, it can only be transferred refers to the....

• law of conservation of energy
• law of conservation of mass
• life facts
• law of conservation of chemistry

Multiple Choice

What does temperature measure?

• Heat
• ºC
• Kinetic Energy
• Thermal Energy

Multiple Choice

How much heat does an aluminum block absorb if 10.00 grams is heated from 25.0^oC to 50.0^oC? *Specific heat of aluminum is 0.900 J/g^oC

• 450 J

• -450 J

• 225 J

• -225 J

Multiple Choice

What is the specific heat of an unknown substance if 100.0 g of it at 200.0 °C reaches an equilibrium temperature of 27.1 °C when it comes in contact with a calorimeter of water.  The water weighs 75. g and had an initial temperature of 20.00 °C?  (Specific heat of water is 4.18 J/g°C) (show your work)

• 0.111 J/g°C
• 1.29 J/g°C
• 0.129 J/g°C
• 22225.85 J

Multiple Choice

The specific heat of platinum is 0.133 J/g°C. How much heat is released when a 10 g piece of platinum cools from 100°C to 50°C?

• 66.5 J

• 665 J

• 0.0266 J

• 0.665 J