Does 1L of water with salt boil faster or slower than one with the same amount of water but without salt? What I know is that since when you add salt to the water the temperature of boiling increase than the water with salt with take longer.
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closed as off-topic by a-cyclohexane-molecule, A.K., Todd Minehardt, Mithoron, Tyberius Jul 30 '18 at 2:29
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- "Homework questions must demonstrate some effort to understand the underlying concepts. For help asking a good homework question, see: How do I ask homework questions on Chemistry Stack Exchange?" – a-cyclohexane-molecule, A.K., Todd Minehardt, Mithoron, Tyberius
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$\begingroup$ The rate of boiling is dependent on heat influx $\endgroup$ – A.K. Jul 29 '18 at 3:54
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2$\begingroup$ What doe you mean with “boil faster”? E.g. reaching boiling temperature faster starting from room temperature, or evaporating faster to dryness? $\endgroup$ – Loong♦ Jul 29 '18 at 16:25
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$\begingroup$ Loong: reaching boiling temperature faster starting from room temperature $\endgroup$ – Giovanni Jul 29 '18 at 21:06
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If the heat applied is equal than yes, 1 L of salt water boil slower than 1 L of unsalted water.
If you are intrested you can calculate the diference in boiling point with the formula $\Delta T = K\ b\ i$, where $i$ is the Van't Hoff factor, (2 for the salt NaCl), and $K$ is the ebuliocopic constant of water ($0.512\ \mathrm{^\circ C\ kg\ mol^{-1}}$), and $b$ is the molality of solution.
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$\begingroup$ Thank you! Yes the same amount of heat is applied. $\endgroup$ – Giovanni Jul 29 '18 at 21:07
