This problem is also about a change of phase, so we need the formula
Now, what do we know?
Now, you're ready for more complex problems
Monday, July 8, 2019
Another problem with a phase change
How much heat is required to boil 85.6 g of ethanol (C2H5OH)? The heat of vaporization (ΔHvap) of ethanol is 161.3 kcal/mol.
This problem is also about a change of phase, so we need the formula
Now, what do we know?
Since we're solving for heat, we don't need to rearrange the formula. We can just substitute in our numbers and solve.
\cdot(161.3~kcal/g)=13,807&space;~kcal "q = m \cdot \Delta H_{vap}=(85.6~g)\cdot(161.3~kcal/g)=13,807 ~kcal")
Now, you're ready for more complex problems
This problem is also about a change of phase, so we need the formula
Now, what do we know?
Now, you're ready for more complex problems
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