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When common salt is added to ice than what is its melting point?
The freezing point is lowered; the decrease is proportional to the content of salt.
When urea is added to water the freezing point is decrease why?
This is a colligative property. Adding a solute will increase the boiling point and decrease the freezing point. The reason has to due with intermolecular forces, and interruption thereof. When water molecules have solute in between them, the temperature has to be lower than normal in order for them to freeze.
When mercuric iodide is added to an aqueous solution of potassium iodide freezing point is raised why?
Freezing point of the solution will increase. Mercuric Iodide will react with Potassium Iodide to form dipotassium tetraiodomercury. The reaction is given below :2KI + HgI2 = K2[HgI4]This association will decrease the number of ions in the solution as a result of which Van't Hoff Factor (i) will decrease as n decreases from 4 to 3.Now, Freezing point depression when a solute is added to a solvent is given by ΔT = i Kf mClearly now i has decreased from when it was an aqueous KI solution to when HgI is added so ΔT is less now, hence less depression in freezing point which means a higher freezing point.Hence the freezing point of solution will increase.Note: Van't Hoff factor (i) =1+alpha(n-1) where alpha=dissociation degree and n is the no of ions dissociatedHope you understand the reasoning behind it now.
How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water (Kf 1.86 and degC(molkg) for water and i 1 for sugar)?
7.44°C~apex
Why does water's density decrease after potassium chloride salt is added?
The water density doesn't decrease.
How much would the freezing point of water decrease if 4 moles of Na-Cl were added to 1 Kg of water?
The freezing point decrease is -14,8 oC.
How would the freezing point of water decrease if 4 mol of NaCl were added to 1kg of water?
The freezing point of water would decrease if 4 mol of NaCl were added because NaCl is a solute that disrupts the water molecules' ability to form solid ice. Each mole of NaCl added to water reduces the freezing point by approximately 1.86 degrees Celsius. So, with 4 mol of NaCl added, the freezing point of water would decrease by about 7.44 degrees Celsius.
What happens to sulphur when it is added to naphthalene?
When sulfur is added to naphthalene, it can form a chemical compound known as sulfurized naphthalene. This can improve the lubricity and anti-wear properties of the naphthalene, making it suitable for use as a lubricant or as an additive in lubricating oils.
Is the naphthalene soluble in Chloroform?
Yes, naphthalene is soluble in chloroform. When added to chloroform, naphthalene dissolves because they have similar solubility characteristics.
What is the depression of freezing point of camphor?
Examples include salt in water, alcohol in water, or the mixing of two solids such as impurities in a finely powdered drug. In such cases, the added compound is the solute, and the original solid can be thought of as the solvent. The resulting solution or solid-solid mixture has a lower freezing point than the pure solvent or solid did. This phenomenon is what causes sea water, (a mixture of salt (and other things) in water) to remain liquid at temperatures below 0 °C (32 °F), the freezing point of pure water.
How can one determine the molar mass of a substance using the freezing point depression method?
To determine the molar mass of a substance using the freezing point depression method, you can measure the decrease in freezing point when a solute is added to a solvent. By knowing the amount of solute added and the decrease in freezing point, you can calculate the molar mass of the solute using the formula: molar mass (mass of solute / moles of solute) (freezing point depression / change in freezing point).
How much Would the freezing point of water decrease of sugar were added to 1 kg of water?
The freezing point of water decreases by about 1.86 degrees Celsius for each mole of solute (such as sugar) dissolved in 1 kg of water. So, the freezing point would decrease by 1.86 degrees Celsius for every mole of sugar added.
What happens when naphthalene is added to water?
Naphthalene is sparingly soluble in water, so when added to water it will partially dissolve but will mostly float on the surface. Naphthalene is volatile, so it will slowly vaporize into the air.
What are the freezing point depression constants and how do they affect the freezing point of a solution?
Freezing point depression constants are specific values that depend on the solvent being used. They represent how much the freezing point of a solvent will decrease when a solute is added. The higher the constant, the greater the decrease in freezing point. This means that adding a solute to a solvent will lower the freezing point of the solution compared to the pure solvent.
When common salt is added to ice than what is its melting point?
The freezing point is lowered; the decrease is proportional to the content of salt.
Will the melting point of ice increase or decrease when salt is added on it?
The melting point of ice decreases when salt is added.
Do naphthalene crystals dissolve in mineral oil?
Yes, naphthalene crystals are soluble in mineral oil, as both are nonpolar substances. When naphthalene is added to mineral oil, it dissolves to form a homogeneous solution.
