@sunil:very good attempt.we appreciate your contriution to this forum.you deserve thumbs up from experts. I'm not too sure about NaCl, but I don't believe that it is either. CaCl 2 is deliquescent while NaCl is hygroscopic. NaCl is deliquescent, hygroscopic or efflorescent? Why is impure NaCl deliquescent while pure NaCl is not? If there is more than one deliquescent substance present in a mixture of solids, ... At f NaCl/Sucrose > 0.25 Clegg’s model predicts an increase followed by a decrease of water activity but does not fit the experimental points. The salt in your salt shaker doesn't absorb any liquid, but I can't say for sure. Hygroscopic substances become wet while deliquescent substance dissolve after absorbing moisture. Basically, anything that is deliquescent is also hygroscopic. Give reason to support your answer. Sodium chloride is hygroscopic, which is why salt cellars / salt shakers become jammed as it sticks together in humid weather. For e.g. that are saturated with respect to the same deliquescent min-erals. At the total solid content of 56%, the solution is saturated with respect to NaCl for f NaCl/Sucrose = 0.25. - 3984541 is of water absorbtion by it during d rainy reasn , when moisture is more in d air. This is the major difference between these two closely related terms. In Chemistry 5 Answers Available Asked by Blake on 30th April, 2020 To get notifications when anyone posts a new answer to this question, Follow New Answers. Please don't post or ask to join a "Group" or "Whatsapp Group" as a comment. yes, nacl is hygroscopic in nature. Post an Answer. Pure NaCl is not deliquescent. Figures 1–5 show the model calculations of relative humidity and solution composition from 90 to 120°C versus X NO3 or X Na for the NaCl–NaNO 3–H 2O, the KNO 3–NaNO 3–H 2O, and the NaCl–KNO 3–H 2O systems. Iron (III) chloride FeCl3, and KOH are both hygroscopic and deliquescent. vry easy eg. Theoretically, the solid is pure NaCl (as is the case for any 2-phase system with starting composition m NaClO 4 /(m NaClO 4 + m NaCl) < 0.95); therefore, the solid might be a poor template for crystallization of a solution containing NaClO 4. But table salt is deliquescent due to Magnesium Chloride(MgCl2) impurities. Hygroscopic means it absorbs water but doesn't dissolve. It will be deleted.

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