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Which of the following will exhibit the greatest vapor pressure lowering?
Which of the following will exhibit the greatest vapor pressure lowering?
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Practice Questions
1 question
Q1
Which of the following will exhibit the greatest vapor pressure lowering?
0.1 M NaCl
0.1 M CaCl2
0.1 M K2SO4
0.1 M glucose
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CaCl2 dissociates into three ions (Ca2+ and 2 Cl-), leading to the greatest vapor pressure lowering among the options.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following will exhibit the greatest vapor pressure lowering?
Solution:
CaCl2 dissociates into three ions (Ca2+ and 2 Cl-), leading to the greatest vapor pressure lowering among the options.
Steps: 6
Show Steps
Step 1: Understand what vapor pressure lowering means. It occurs when a solute is added to a solvent, reducing the solvent's vapor pressure.
Step 2: Know that ionic compounds dissociate into ions when dissolved in water. The more ions produced, the greater the effect on vapor pressure.
Step 3: Look at the options given. Identify which compounds are ionic and how many ions they produce when dissolved.
Step 4: For CaCl2, it dissociates into 3 ions: 1 Ca2+ ion and 2 Cl- ions.
Step 5: Compare the number of ions produced by other options. The one with the most ions will have the greatest vapor pressure lowering.
Step 6: Conclude that since CaCl2 produces the most ions, it will exhibit the greatest vapor pressure lowering.
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