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Which of the following will have the lowest freezing point?
Which of the following will have the lowest freezing point?
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Practice Questions
1 question
Q1
Which of the following will have the lowest freezing point?
0.1 m NaCl
0.1 m KBr
0.1 m MgCl2
0.1 m C6H12O6
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0.1 m MgCl2 produces 3 particles (Mg2+ and 2 Cl-), leading to the lowest freezing point among the options.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following will have the lowest freezing point?
Solution:
0.1 m MgCl2 produces 3 particles (Mg2+ and 2 Cl-), leading to the lowest freezing point among the options.
Steps: 7
Show Steps
Step 1: Understand that freezing point depression occurs when a solute is added to a solvent, lowering the freezing point.
Step 2: Know that the freezing point depression depends on the number of particles the solute breaks into when dissolved.
Step 3: Identify the solute in the question. In this case, we have 0.1 m MgCl2.
Step 4: Determine how many particles MgCl2 produces when it dissolves in water. It breaks into 1 magnesium ion (Mg2+) and 2 chloride ions (Cl-).
Step 5: Count the total number of particles produced by 0.1 m MgCl2: 1 (Mg2+) + 2 (Cl-) = 3 particles.
Step 6: Compare this with other options (if provided) to see which produces the most particles.
Step 7: Conclude that since 0.1 m MgCl2 produces the most particles, it will have the lowest freezing point.
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