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A student performs a reaction twice. in the second trial she raises the temperature by 20 degrees C and notices that the reaction takes place more quickly. is the reaction endothermic?
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∙ 9y ago
Dang Flabbet.
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∙ 9y ago
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How does the reaction temperature affect the rate of a chemical reaction?
Changing temperatures has a dramatic affect on the rate of chemical reaction. As an example for every 10 degrees you raise the environment the reaction doubles (to a certain degree)
If the optimum temperature for human chemical activity is body temperature 36.6 degrees celsius what would happen to the rate of reaction of amylase as it approached zero degrees celsius?
The proteins that comprise the amylase would begin to denature. In other words, the chemical and ionic bonds that hold the protein together would begin to break apart, and it would start to unravel. In general, reaction rate increases with temperature; the usual rule of thumb for temperatures near room temperature is that the rate doubles for every 10 degrees C (use the Arrhenius rate equation if you want exact figures).
Why maintain the temperature of the reaction at 90 degrees C in synthesis of aspirin?
To prevetn evaporation of salicylic acid
What is the driving force for ice to melt above 0 degrees C?
Zero degrees Celsius is the melting point of ice. If the temperature rises to zero degrees Celsius or higher, the ice will become water.
How does a change in temperature from 25o to 50o affect the rate of the reaction rate?
The general rule of thumb is that the reaction rate will double for each 10ºC change in temperature. So, going from 25 to 50 degrees, would increase the reaction rate APPROXIMATELY by 4.5 times. This is not a law, but just a general rule of thumb for approximating the rate.
How does the reaction temperature affect the rate of a chemical reaction?
Changing temperatures has a dramatic affect on the rate of chemical reaction. As an example for every 10 degrees you raise the environment the reaction doubles (to a certain degree)
Is reaction of potassium iodide and water exothermic or endothermic?
Its endothermic... In my experiment, it went from 26 to 25 degrees celsius... Its endothermic... In my experiment, it went from 26 to 25 degrees celsius... This is wrong it is exothermic. Potassium chloride is snow salt. it is used because not only does it react with the snow to create hydrochloric acide and potassium hydroxide (both with much lower freezing points) but, the EXOTHERMIC reaction also helps melt the snow No, it is endothermic. The only reason we add salt to snow is to lower the melting point. If you're curious, dissolve as much KCl in a beaker as you can as quickly as you can. The water temperature will drop dramatically.
If the optimum temperature for human chemical activity is body temperature 36.6 degrees celsius what would happen to the rate of reaction of amylase as it approached zero degrees celsius?
The proteins that comprise the amylase would begin to denature. In other words, the chemical and ionic bonds that hold the protein together would begin to break apart, and it would start to unravel. In general, reaction rate increases with temperature; the usual rule of thumb for temperatures near room temperature is that the rate doubles for every 10 degrees C (use the Arrhenius rate equation if you want exact figures).
Is a Bengal tiger endothermic or ectothermic?
Like all mammals, lions are endothermic, or warm blooded. That means that they maintain a constant, warm body temperature regardless of the temperature of the environment. This means they require more food than a cold blooded animal of an equal size, but they are capable of greater endurance than a cold blooded animal of their size. A lion's body temperature is about 100.5 to 102.5 degrees Fahrenheit.
Is human blood warm or cold?
Technically, animals are not "warm blooded" or "cold blooded", but rater endothermic( regulate their own internal temperature) or exothermic (relying on environment to regulate internal temperature) but I don't know how much biology you have taken. Humans are "warm blooded", as are all animals (or, endothermic - they regulate their own internal temperature).
What is an engines best working temperature?
In most cases it is 195-205 degrees F. This is the temperature at which an internal combustion engine performs it's best. And the faster the engine reaches this temperature the better.
What effect dose temperature have on reaction rate?
It depends on the original temperature, but the rule of thumb is that near normal room temperature, raising the temperature by ten degrees will roughly double the reaction rate.
Why maintain the temperature of the reaction at 90 degrees C in synthesis of aspirin?
To prevetn evaporation of salicylic acid
What is a piranha's body temperature?
Like all fish, piranhas are cold-blooded, or "ectothermic", so their body temperature has a wider range than that of an endothermic animal such as a mammal or bird. Their body temperaure is reliant upon their environment. Piranhas live in rivers that have a temperature range of 24 - 30 degrees Celsius, or 75 - 86 degrees Fahrenheit.
Why is it desirable to have the water a few degrees colder than room temperature when the initial temperature is taken?
It is desirable to have water a few degrees colder than room temperature when the initial temperature was taken for accuracy to be achieved. This is affected by the amount of heat energy which escapes the surroundings when the water is above room temperature.
What is the difference between atomic bomb and TNT?
The difference is the source of explosive energy, the temperature, and the reaction rate:atomic bomb, the explosive energy comes from the strong force nuclear binding energy, the temperature is millions of degrees, the reaction rate is on a scale of microsecondsTNT, the explosive energy comes from the electrostatic force of chemical bonds between valence band electrons, the temperature is thousands of degrees, the reaction rate is on the scale of milliseconds
Is the rate of a chemical reaction dependent of temperature?
In general, as temperature rises, so does reaction rate. This is because the rate of reaction is dependent on the collision of the reacting molecules or atoms. As temperature rises, molecules or atoms respond with increased motion, increasing the collision rate, thus increasing the reaction rate.
