Name CHM 130 Exp8 Pre-Lab Assignment Solutions Do this Pre-Lab assignment and su
ID: 547516 • Letter: N
Question
Name CHM 130 Exp8 Pre-Lab Assignment Solutions Do this Pre-Lab assignment and submit it to your instructor prior to lab according to directions. 1. Which section(s) of the lab will take the longest time in the lab to complete? Select ALL that apply. 111 2. Which of the following is true regarding electrolytes? Select ALL that apply. Strong electrolytes dissociate 100% into ions weak electrolytes all remain molecules in solution Non-electrolytes only partially dissociate into ions If there are ions present in a solution, it can carry an electric current 3. Which of the following are important safety precautions and experimental details to observe during this experiment? Select ALL that apply Use the crucible tongs to lift the hot evaporating dish Do not leave a lit Bunsen burner to burn without supervision Heat the evaporating dish until the solid pops for at least a minute to remove all the water Keep your goggles on when in the chemical work zone Use beaker tongs (and only beaker tongs) to move a beake r full of hot or boiling water Keep your lab coat button when in the chemical work zone Taste the solution in the evaporating dish before heating and about half way through heating to determine if the salt caoncentration has decreased, increased or stayed the sameExplanation / Answer
2) a. Strong electrolytes dissociates 100% into ions
d. If there are ions present in the solution, it can carry an electric current
1. Pressure and volume are changing in Boyle's law
Answer: A & B
2. Temperature and volume are changing in Charle's law
Answer: B & C
3. a) Combination reaction
b) Single displacement reaction
c) Combination reaction
4) Answer C & E
5) a) Answer A
b) ANswer C
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