7

Actually, the textbook should remove this question. You should discuss this with your teacher. It will be a service to future students. The heavier elements of group II elements form insoluble sulfates, phosphates and carbonates. Now carbonates display another interesting phenomenon. If you keep bubbling carbon dioxide in into a group II carbonate solution (...


5

Well, acetone is at the same time polar (so it likes water) and lipophilic (so it likes fat). As such, it is a very good solvent.


3

Note that I have never heard about Varsol until now, living in the Central Europe. By searching Wikipedia ( what you could do as well before asking ), I realized the below: Varsol alias White spirit alias many other synonyms, used as a painting solvent, is based on C7-C12 oil hydrocarbons, with density 0.765(type T1), 0.780(type T2), 0.795(type T3) ( ...


2

Sodium bicarbonate is a ionic compound with quite limited solubility in water. Ethanol is worse solvent to dissolve ionic compounds than water is, as it is less polar. Therefore salts have generally worse solubility in ethanol than in water.


2

Poutnik has given an excellent answer in general for your question. Since you asked about Varsol™ in particular (not white spirit in general), I'd like to give an additional insights for your benefit. Yet you didn't mention the paticular Varsol™ brand so I'll give physical data for all 3 Varsol™ brands avilable. Varsol™ is an ExxonMobil Chemical brand for a ...


1

If you know the phase diagram of the gas, and can calculate the exact pressure the gas should have given the volume outside of the molten salt, you can use the measured pressure/temperature to determine any difference in pressure. Then you can calculate the number of moles of gas that must be absorbed to generate the pressure difference. If the gas is ...


1

Probably not so much calcium hydroxide, but alkali metal hydroxides mixing with each other in the liquid phase. The pairs $\ce{LiOH-NaOH}$ and $\ce{KOH-NaOH}$ are not only fully miscible, they have been studied as fuel cell electrolytes. The picture below, from the referenced article, shows results for the a range of electrolyte compositions that imply the ...


1

The solubility data for MgCO3 and Mg(OH)2 are these: for MgCO3 0.01 g/100 mL cold H2O; for Mg(OH)2 0.0009 g/100 mL H2O @ 18C, 0.004 g/100 mL H2O @ 100C (CRC Handbook). The published Ksp data are all over the place: for MgCO3, I have found 10e-5, 6.8 x 10e-6, and 3.5 x 10e-8 (twice). For Mg(OH)2, in the same set of 4 documents, I have 1.8 x 10e-11 (twice), 1....


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