Short answer: You don't say what you are dissolving KCl (potassium chloride) in but we'll assume it is water. Salts like KCl dissolve in water better at higher temperatures. Boiling water (100C or 212 F) is the hottest you can get water without confining it and increasing the pressure. So 212F or 100C is the temperature that KCl is most soluble in water.
Longer answer: As you add KCl to water the boiling point of the solution becomes lower. So the real maximum solubility temperature (assuming no pressurization) is less than 212 F (100 C). The easiest way to measure this would be to mix highly purified KCl with highly purified water and boil it to see what the boiling temperature is. You must add enough KCl so that even at boiling temperature you still have some solids left that way you will have a saturated solution which will have as much KCl dissolved as the water can hold.
biphenyl is soluble in ethanol and also in most of organic solvents
CaCO3 is solid at room temperature
Liquid
The hydroxide of Lithium is most soluble but all the hydroxides of alkali metals are completely soluble in water.
The phase of most elements, at standard temperature and pressure, is solid. The exceptions are as follows: Gas: Hydrogen, Helium, Nitrogen, Oxygen, Fluorine, Neon, Chlorine, Argon, Krypton, Xenon, Radon. Liquid: Bromine, Mercury. Standard temperature and pressure (shortened to s.t.p.) are 293K (20oC) and 1atm (normal atmospheric pressure).
Practically all solid solutes are more soluble at high temperature.
Corrected answer:NO,MOST of the potassium salts and ALL of the nitrates are SOLUBLE, not insoluble!!!So potassium nitrate is NOT INsolubleSome potassium salts and complexes are insoluble like Potassium Hexanitritocobaltate(III) = K3[Co(NO2)6] , etc.
Yes, ALL gases are less soluble at higher temperature.
No- hydrogen is a gas at room temperature.
That obviously depends on the temperature. At room temperature, most metals are solid.
Solid
Any solid can be placed in a liquid. If the solid is less dense then it will float. If it is not soluble and its melting temperature is higher than the temperature of the liquid it will remain solid and not become part of a mixture. any solid can be converted into liquid except those which becomes sublimed.
Yes, fructose is the most soluble carbohydrate in water.
sodium chloride
No. When dissolving a solid into a liquid, solubility is higher when the temperature is higher. When dissolving a gas into a liquid, solubility is higher when the temperature is lower.
Co
For sodium and potassium bromide is more soluble than chloride.