3. List two factors which will affect the rate of a reaction and explain, using

Question

3. List two factors which will affect the rate of a reaction and explain, using Collision Theory, how each factor changes the rate (Please be specific about whether the particular change will increase the rate or decrease the rate.) 4. AHnr"-75.2 kJ for 2 NOO + Cap 2 NOC10 . A scientist places four moles of nitrogen monoxide and two moles of chlorine gas into flask A and the same amounts into flask B, then allows the systems to reach equilibeium. Flask A is at 25°C and flask B is at 200°C a) In which flask will the reaction occur faster? Explain b) In which flask will the reaction occur to a greater extent? Explain. S. The folowing is a proposed mechanism for the reaction NOs COp NO COp) The rate law for the reaction is rate -kNO2. a) Is this a plausible mechanism? Explain b) Identify the reactants, intermediates, and products 6. Complete the following nuclear equations b) " N " Pa

Explanation / Answer

Ans3: the factors which the reaction rate are mainly temperature and the concentration. 1.TEMPERATURE:chemical reactions are of two types:1.endothermic in which heat get absorbed.2.exothermic in which the heat get released. Most chemical reations are endothermic reactions so alter with temperature.an increase in temperature will increase the rate of reaction because the increase in temperature will increases the kinetic energy of the reactant molecules and this will give rise to the effective collision.

2.CONCENTRATION:By increasing the concentration of one or more reactants will increase the rate of reaction.this is due the higher concentration of a reactant will cause more collisions of that reactant in a specific period of time.  

Ans4:a)As we know from the above explanation that an increase in temperature will increase the rate of reaction so in FLASK B REACTION TAKE PLACE WITH A FASTER RATE. b)As we know at room temperature,the rate of reaction get doubled by every 10degree rise in temperature so in FLASK A REACTION WILL OCCUR TO A GREATER EXTENT.because it takes longer time for the reaction to take place.

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