Given the following data for the reaction below, answer questions A, B and C. (9

Question

Given the following data for the reaction below, answer questions A, B and C. (9 Points total; 3 each) A + B rightarrow products This reaction is order for A. 0 1 2 3 This reaction is order for A. 0 1 2 3 What is the value of k? 132 13.2 0.0076 176 In the Haber process shown below, predict the direction in which this exothermic reaction will shift when the system conditions are changed as follows: N_2(g) + 3 H_2(g) left rightarrow 2 NH_3(g) The amount of N_2(g) is decreased Left No Change Right The amount of NH_3(g) is increased Left No Change Right The temperature is decreased Left No Change Right The pressure is reduced Left No Change Right A catalyst is added Left No Change Right

Explanation / Answer

A)

for A order,. maintain B constant, this is true for experiment 1 and 2

as we double A, the rate --> 0.396/0.099 -- > 4x

therefore, this must be 2nd order with respect to A

b)

with respect to B (I assume this is an error, since A is already shown in first question)

then, maintain A constnat, which is true for 2 and 3

as we double B --> 0.792/0.396 --> 2x factor

so this is FIRST order with respect to B

now

Rate = K*[A]^2[B]

substitute any value, i.e. 1

0.099 = k*(0.1^2)(0.075)

K = 0.099 / ((0.1^2)(0.075))

K = 132

best answer is A

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