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)
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a)
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The concentration of IBr will increase. |
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b)
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The pressure will decrease. |
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c)
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The concentration of Br2 will decrease. |
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d)
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There will be no change to the equilibrium system. |
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e)
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The concentration of I2 will increase. |
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Question 7 (Mandatory) (1 point)
Which process is reversible?
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a)
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sulfur trioxide decomposing into sulfur dioxide and oxygen |
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Question 9 (Mandatory) (1 point)
Which statement does not describe a characteristic of basic solutions?
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a)
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They react with ammonium chloride to produce ammonia gas. |
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c)
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They react with carbonates to form carbon dioxide gas. |
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d)
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They turn litmus paper blue. |
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Question 10 (Mandatory) (1 point)
What is the Brønstead-Lowry definition of a base?
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a)
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a substance that donates protons |
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b)
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a substance that accepts protons |
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c)
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a substance that dissolves in water to form OH- ions |
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d)
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a substance that dissolves in water to form H+ ions |
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Question 13 (Mandatory) (1 point)
What is the conjugate base of HSO4-(aq)?
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e)
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This compound does not have a conjugate base. |
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Question 14 (Mandatory) (1 point)
Which term describes a substance that acts as a proton donor and a proton acceptor?
Question 15 (Mandatory) (1 point)
Based on your knowledge of the relative strength of oxoacids, which acid is the strongest acid?
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e)
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These acids are all the same strength. |
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Question 16 (Mandatory) (1 point)
What is the concentration of hydroxide ions in a solution of 0.350 mol/L HI(aq)?
Question 17 (Mandatory) (1 point)
A solution contains 6.3 ´ 10-5 hydronium ions. What is the pH of the solution?
Question 18 (Mandatory) (1 point)
A solution has a pOH of 5.23. What is the concentration of hydroxide ions in the solution?