Question

In: Chemistry

What will happen to the following equilibrium if an inert gas is added while the volume remains constant?

 

Question 6 (Mandatory) (1 point)

What will happen to the following equilibrium if an inert gas is added while the volume remains constant?
2IBr(g) Û I2(g) + Br2(g)

 

a)

 The concentration of IBr will increase.
 

b)

 The pressure will decrease.
 

c)

 The concentration of Br2 will decrease.
 

d)

 There will be no change to the equilibrium system.
 

e)

 The concentration of I2 will increase.

Question 7 (Mandatory) (1 point)

Which process is reversible?

 

a)

 sulfur trioxide decomposing into sulfur dioxide and oxygen
 

b)

 a wall being painted
 

c)

 a cake baking
 

d)

 wood burning
 

e)

 a seed germinating

Question 9 (Mandatory) (1 point)

Which statement does not describe a characteristic of basic solutions?

 

a)

 They react with ammonium chloride to produce ammonia gas.
 

b)

 They taste bitter.
 

c)

 They react with carbonates to form carbon dioxide gas.
 

d)

 They turn litmus paper blue.
 

e)

 They feel slippery.

Question 10 (Mandatory) (1 point)

What is the Brønstead-Lowry definition of a base?

 

a)

 a substance that donates protons
 

b)

 a substance that accepts protons
 

c)

 a substance that dissolves in water to form OH- ions
 

d)

 a substance that dissolves in water to form H+ ions
 

e)

 none of the above

Question 13 (Mandatory) (1 point)

What is the conjugate base of HSO4-(aq)?

 

a)

 H3O+(aq)
 

b)

 OH-(aq)
 

c)

 H2SO4(aq)
 

d)

 SO42-(aq)
 

e)

 This compound does not have a conjugate base.

Question 14 (Mandatory) (1 point)

Which term describes a substance that acts as a proton donor and a proton acceptor?

 

a)

 acid-base
 

b)

 polyprotic
 

c)

 amphoteric
 

d)

 buffer
 

e)

 monoprotic

Question 15 (Mandatory) (1 point)

Based on your knowledge of the relative strength of oxoacids, which acid is the strongest acid?

 

a)

 HIO(aq)
 

b)

 HIO2(aq)
 

c)

 HIO3(aq)
 

d)

 HIO4(aq)
 

e)

 These acids are all the same strength.

Question 16 (Mandatory) (1 point)

What is the concentration of hydroxide ions in a solution of 0.350 mol/L HI(aq)?

 

a)

 0.175 mol/L
 

b)

 0.650 mol/L
 

c)

 0.350 mol/L
 

d)

 1.30 mol/L
 

e)

 2.86 ´ 10-14 mol/L

Question 17 (Mandatory) (1 point)

A solution contains 6.3 ´ 10-5 hydronium ions. What is the pH of the solution?

 

a)

 8.10
 

b)

 9.80
 

c)

 6.30
 

d)

 5.00
 

e)

 4.20

Question 18 (Mandatory) (1 point)

A solution has a pOH of 5.23. What is the concentration of hydroxide ions in the solution?

 

a)

 1.0 ´ 10-14
 

b)

 1.7 ´ 10-9
 

c)

 1.0 ´ 10-7
 

d)

 5.9 ´ 10-6
 

e)

 none of the above

Solutions

Expert Solution

queen_honey_blossom answered 1 year ago
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