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The temperature inside a pressure cooker is 117 C Calculate the vapor pressure of water inside the pressure cooker?
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∙ 11y ago
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∙ 11y ago
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Why the boiling point of water in pressure cooker high?
A pressure cooker minimizes the escape of fluids or air. The build-up of air and fluid increases the pressure inside the cooker, which also increases the boiling point. An open kettle allows the fluid and air to escape, heat is lost thus cooking time is longer.
What is the pressure cooker also called?
A pressure cooker is a cooking vessel that is enclosed with a lid that seals to the pan with a rubber gasket, which cooks at a pressure that is higher than the atmospheric pressure. These cookers are usually made of thick-wall stainless steel or thick aluminum. In the lid is a small vent-hole that contains a pressure-regulating mechanism. Water in the food being cooked will boil and cause a steam build-up in the vessel, which will increase the pressure inside the vessel. The pressure-regulating mechanism on the vent-hole will allow some steam out if pressure exceeds a certain limit (usually around 15 psi, or 15 pounds per square inch), thus maintaining a more or less constant pressure inside the pressure cooker that is higher than atmospheric pressure. Since the boiling point increases with higher pressure (for example, water boils at 100 degrees C at atmospheric pressure but it will boil at a higher temperature inside a pressure cooker since the pressure inside is higher), the temperature inside a pressure cooker can rise more than it would have in an open-enclosure pan. Because of the higher temperature, meat becomes soft easily and food cooks faster causing less loss of nutrients. Pressure cookers often have various safety mechanisms to prevent the buildup of excessive pressure and exploding. After cooking is finished, it is important to release the steam slowly first, because if the lid is opened suddenly, a large amount of steam escaping can cause scalding. Many pressure cookers have special mechanisms for controlled steam release before opening the lid.
Does the food cook easily in pressure cooker because the average kinetic energy if the particles of gas is directly proportional to the kelvin temperature of the gas?
Increasing the pressure the temperature also increase and cooking is faster. In a normal, uncovered pot, the temperature of the liquid will increase until it reaches the boiling point, and then stabilize at that temperature. The reason that a pressure cooker can improve on cooking times is that the boiling point is a function of the ambient pressure. An uncovered pot at sea level will boil at a higher temperature than the same uncovered pot in Mexico City or Denver or any other high altitude city. A pressure cooker allows the temperature to go higher because the pressure of the vapor above the liquid is contained so the boiling temperature can go higher and thus the food inside is subject to is higher temperatures. As far as kinematic energy is concerned - yes - that will be true. Higher temperatures mean higher average kinematic energy for the molecules and it tends towards being proportional to the Kelvin temperature as long as you are still well below the critical temperature and pressure of the fluid.
What causes the magma inside a volcano to rise to award the surface?
The molten magma increases in pressure (like a pressure cooker at home) until it is forced towards the surface.
What is room temperature and pressure?
NIL... Does NOT exist...As there is no medium inside the vacuum.
At what degrees the water boils in a pressure cooker?
Above 100 deg C The extent to which the temperature is higher than 100 deg C depends on the pressure inside the cooker and that is controlled by the weights on the cooker valve.
How does a pressure cooker demonstrate the effect of air pressure on waters boiling point?
Vapour rom the boiling water is not allowed to escape and so the pressure above the water increases. This raises the temperature at which the water inside the cooker boils.
What is The temperatur inside a pressure cooker?
Depends on the set pressure.
The temperature in which water boils inside a pressure cooker is lower than in an open pan at sea level?
it doesnt it just boils it faster.
What is the air pressure inside the pressure cooker after the safety valve melts?
sex
How is a pressure cooker use in saving energy for cooking and tenderizing meat faster?
pressure cookers cook faster. Instead of cooking something for 3-4 hours you can cut that down to maybe 1 hour. It tenderizes meat by forcing the steam into the food and breaking up some of the molecules
Why the boiling point of water in pressure cooker high?
A pressure cooker minimizes the escape of fluids or air. The build-up of air and fluid increases the pressure inside the cooker, which also increases the boiling point. An open kettle allows the fluid and air to escape, heat is lost thus cooking time is longer.
Explain the principle of operation for the pressure cooker and the vacuum pan in cooking?
Pressure Cooker Operation In pressure cooker,the food is cooked in closed condition ,where,there is pressure valve ,here you are increasing the pressure inside the vessel hence ,pressure inside the pan will be greater than atmospheric pressure,hence the boiling point is reached in less time and cooking takes place faster. Vacuum Pan Here vacuum is opened or reducing the pressure where air inside is removed and hence the product is cooked at lower temperature .More u increase the vacuum,more reduction in pressure and hence longer time to cook ,
Why do vegetables cook better and faster in a pressure cooker?
Because the boiling point of water increases as the pressure increases, the pressure built up inside the cooker allows the liquid in the pot to rise to a higher temperature before boiling thus cooking the food faster than usual.
What is the pressure inside the pressure cooker when closed but no heating will it be equal to atmospheric pressure or not?
The pressure inside will be the same as what the atmospheric pressure was when the lid was closed as long as no heat is added or removed.
What causes jars to break in pressure cooker?
Jars, presumably glass ones, can not withstand the pressures that a pressure cooker make. A pressure cooker increases the pressure in the pan, so you need a lower temperature and a shorter time to cook something, but jars burst when the pressure inside and outside the jar differ too much. It's best not to use them together.
How does pressure affect the steaming process?
A pressure cooker speeds up cooking time. It works by holding some of the steam inside. This raises the temperature and forces the steam into the food so everything cooks faster.
