be used. If you are not familiar with the instruments below, use Internet or oth

Question

be used. If you are not familiar with the instruments below, use Internet or other resources to determine what the Instruments measure pH meter e-Used to monitor a reaction that involves a colored reactant or product Used to monitor a reaction that involvesa chiral (optically active) reactant or product. B. Manometer Used to monitor a reaction that involves an Used to monitor a reaction that involves a acidic or basic reactant or product. gaseous reactant or product. Used to monitor a reaction that is exothermic or endothermic, with a known enthalpy. E O rotation 14. Consider the following reaction No.(g) 2NO2(g) The rate of the reaction above can be studied at constant temperature using a pressure probe. However, the data are complicated due to the presence of two gases. 4 If the reaction vessel initially contained only dinitrogen tetroxide, would you expect an overal increase or decrease in pressure as the reaction proceeds? Justify your reasoning Suppose the above reaction showed an increase of 0.500 kPa in 10 seconds. What would be the change in pressure for dinitrogen tetroxide in the same time period? & POGII." Activities for Al-Chemistry

Explanation / Answer

you have

N2O4 (g) ==== 2NO2 (g)

1 mole produces 2 moles of gas so you can expect the pressure to increase when the reaction proceeds forward.

The partial pressure of N2O4 decreases by 0.5 Kpa in 10 seconds

when 1 mole of N2O4 disspears 2 moles of NO2 are formed

partial pressure of n2O4 decreases by 0.5 Kpa

partial pressure of NO increases by 2 * 0.5 Kpa

total increase = 2 * 0.5 - 0.5 = 0.5 Kpa

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