12. Consider the reaction: 2H2+O2 2H2O Decreasing the temperature would the rate of reaction increase a. b. decrease not change
1 answer:
Answer: Option (b) is the correct answer.
Explanation:
As the given reaction is as follows.
So, when we decrease the temperature for this reaction then there will be decrease in kinetic energy of reactant molecules. As a result, less number of collisions will take place.
Hence, there will be decrease in rate of chemical reaction.
Thus, we can conclude that in the given reaction decreasing the temperature would also decrease the rate of reaction.
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Answer ; The correct answer is : 346 m/s .
Sound is a type of longitudinal wave , which is produced when a matter compress or refracts .
Speed of sounds depends on factors like medium , density , temperature etc .
Effect of Temperature on speed of sounds :
When the temperature increases , molecules gains energy and they starts vibrating and with higher temperature vibration becomes fast . So the waves of sounds can travel faster due to faster vibrations . Hence , speed of sounds is directly proportional to the temperature or speed of sounds increases with increase in temperature .
The speed of sounds at 0⁰C is 331
The relation between speed of sound and temperature is given as :
Given : Temperature = 25 ⁰ C
Plugging values in formula =>