As sodium chloride is polar molecule it will be soluble in polar solvents like water. And insoluble in kerosene (as it is non-polar solvent). Ans: Sodium chloride is an ionic molecule. There exists electronegativity difference between Sodium and Chlorine, which gives polarity to the molecule.

It is the polar nature of water that allows salts to dissolve. In petrol, the positive and negative ions within the salt have nothing to be attracted to because everything is of a neutral charge, and so the salt remains as a solid.

And, water is called the “universal solvent” because it dissolves more substances than any other liquid.

Emulsions are an example of colloids composed of tiny particles suspended in another immiscible (unmixable) material. These liquids that do not mix are said to be immiscible. An example would be oil and water. If you mix oil and water and shake them a cloudy suspension is formed.

Solute and Solvent

Oils and fats not have any polar part and so for them to dissolve in water they would have to break some of water’s hydrogen bonds. Water will not do this so the oil is forced to stay separate from the water.

Water. We all know from simple chemistry that water and oil do not mix. When frying, you should adhere to this saying, as water causes oil breakdown. During the frying process, heat causes food to release moisture and result in oil decomposition.

What Are Oil Dissolving Solvents and What Are They Used For?

• Acetone — Commonly used as a cleaner and in cosmetics that remove skin oil.
• Hexane — Frequently used as a solvent for dissolving various types of cooking oil.
• Carbon tetrachloride — Often used as a general cleaner in numerous industries.

Greasy surfaces Vinegar just doesn’t work on removing grease from surfaces because it is an acid. Use an alkaline soap, such as dish soap, for oil spills and messes. The University of Nebraska has a fascinating explanation of cleaning science that explains acid verses alkaline.

By changing your oil on a regular basis within the recommended time in your vehicle’s owners manual. Keep in mind that this doesn’t mean you have to change it every 3000 miles; most automakers recommend 5000 – 7500 miles. This will remove oil sludge deposits in lubricating areas with your oil change.

Removing motor oil from surfaces Wipe with a solution of ½ cup of Clorox® Disinfecting Bleach per gallon of water. Allow solution to contact surface for 5 minutes. Rinse well and air dry.

How to Remove Oil Stains

1. If the spill is still wet, cover the stain with clay cat litter, sand, cornmeal, cornstarch or baking soda.
2. Once the spill has dried, sweep up the absorbent material.
3. Use a stiff brush, such as a broom, and scrub the area with a paste made of baking soda and water.

Mixing bleach and baking soda has no harmful effects, and baking soda may probably be the only cleaning agent you can safely mix with bleach. This is because this mixture won’t react badly and create toxic gases like chloramine the way other cleaning agents do.

Bleach and soap don’t mix! Mixing chlorine bleach and cleaners like dish soap can be harmful to your health. Mixing bleach with other cleaners can release toxic gases. Bleach can irritate your skin and eyes.

Yes, you can mix ammonia and baking soda (but only the baking kind of ammonia). Ammonia gets stripped off alongside released carbon dioxide. You can use the products interchangeably in recipes—but only those that are low-moisture. Anything above 5% moisture will cause the ammonia gas to dissolve into the water.

Mixing Bleach and Ammonia When bleach is mixed with ammonia, toxic gases called chloramines are produced. Exposure to chloramine gases can cause the following symptoms: Coughing. Nausea.