Why Adding Salt to Water Increases the Boiling Point

If you add salt to water, you raise the waters boiling point, or the temperature at which it will boil. The temperature needed to boil will increase about 0.5 of a degree Celsius for every 58 grams of dissolved salt  per kilogram of water.  This is an example of boiling point elevation, and it is not exclusive to water: It occurs any time you add a non-volatile solute such as salt to a solvent such as water. Water boils when the molecules are able to overcome the vapor pressure of the surrounding air to move from the liquid phase to the gas phase. When you add a solute that increases the amount of energy (heat) needed for water to make the transition, a few processes occur. How Does It Work? When you add salt to water, sodium chloride dissociates into sodium and chlorine ions and these charged particles alter the intermolecular forces between water molecules. In addition to affecting the hydrogen bonding between water molecules, there is an ion-dipole interaction to consider: Every water molecule is a dipole, which means one side (the oxygen side) is more negative and the other side (the hydrogen side) is more positive. The positively charged sodium ions align with the oxygen side of a water molecule, while the negatively charged chlorine ions align with the hydrogen side of a water molecule. The ion-dipole interaction is stronger than the hydrogen bonding between the water molecules, so more energy is needed to move water away from the ions and into the vapor phase. Even without a charged solute, adding particles to water raises the boiling point because part of the pressure the solution exerts on the atmosphere now comes from solute particles, not just solvent (water) molecules. The water molecules need more energy to produce enough pressure to escape the boundary of the liquid. The more salt (or any solute) added to water, the more you raise the boiling point. The phenomenon depends on the number of particles formed in the solution. Freezing point depression is another colligative property that works the same way: If you add salt to water, you lower its freezing point as well as raise its boiling point. The Boiling Point of NaCl When you dissolve salt in water, it breaks into sodium and chloride ions. If you boiled all the water off, the ions would recombine to form solid salt. However, there is no danger of boiling the NaCl: The boiling point of sodium chloride is 2575 F or 1413 C. Salt, like other ionic solids, has an extremely high boiling point.

The Fight Against Ielts Top 10 Essay Samples

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Porter’s Five Force Model of Toyota Free Essays

MIS Porter’s Five Forces Model Of Toyota Porter’s five forces model is a framework for the industry analysis and development of business strategy. Three of Porter’s five forces refers to rivalry from external/outside sources such as micro environment, macro environment and rest are internal threats. It draws ahead Industrial Organization economics to develop five forces that conclude the competitive intensity and consequently attractiveness of a market place or industry. We will write a custom essay sample on Porter’s Five Force Model of Toyota or any similar topic only for you Order Now Attractiveness in this framework refers to the generally overall industry profitability. An â€Å"unattractiveness† in industry is one in which the mixture of these five forces proceed to constrain behind overall profitability. An extremely unattractive industry would be one moving toward â€Å"pure competition†, in which existing profits for all companies are moving down to zero. 1. Bargaining power of suppliers The bargaining power of suppliers is low. There are various types of suppliers in the vehicles industry, including the cooling system, electrical system, braking system and fuel supply system distributed across the globe. However, most vehicle manufactures own many interchangeable suppliers, and also have the ability to produce the components by their own in the short time. Thus, the suppliers do not own the power to change the price. 2. Bargaining power of buyers The Bargaining power of buyers is high. Today, buyers have a lot of information channel, such as the internet, where can easily find the proper vehicle. And, the preferences of the private consumers are important to the vehicle corporations. If automobile Company increases one type, they can also choose other type or the cheaper one. And the vehicle’s buyers can easily find the substitutes, such as walking, and bus. 3. Threat of new entrants The entrants can not enter to the automotive industry easily, as automobiles are special products that require a large amount of money on the design, electronic functions, and safety issues. And another important issue is the brand loyalty in the car market. Vehicle firms always benefit the brand value, and decrease the consumer sensitivity about the price. For example, General Motors provided $1000 to the Saab owners who planed to buy the 2008 model. 4. Rivalry among competitors The competition in the auto industry is strong. The top eight auto companies have occupy large part of global revenues, and these automobile manufacturers strengthened the globalization and consolidation across the worldwide range. The competition is not only between the corporations, but between the governments. Governments established protection laws to protect the products of each own production. For example, U. S. government increased the additional tariffs on Chinese tires in 2009. And the Toyota vehicles were recalled because the U. S. government investigated into the accelerator pedal problems. 5. Threat of substitutes The threat of the substitutes is high. There are a lot of substitutes in the automobile industry. When the price of the vehicles rises, the substitutes will emerge, there are many types of equipment that can take the place of vehicles, such bus, subway, bicycle and even walking. How to cite Porter’s Five Force Model of Toyota, Papers