Please answer 2,3,4 I understand one! Need help on the rest 1. (3 pts) Given the

Question

Please answer 2,3,4 I understand one! Need help on the rest

1. (3 pts) Given their Hmn classify the following chemical reactions as endothermic or exothermic. a) N2(g) + O2(g) 2 NOg) , Horxn-1 80.6 kJ c) NO2(g) + sunlight NOg) + O(g), AHorn-- 142.5 kJ 2. (6 pts) Wha s te rate of consumption relative to the rate of production of the denoted pairs of molecules/atoms in the following balanced chemical reactions? 2 CO(g) + O2(g) 2CO2(g) a) O2 and CO2 in b) As and AsCl in: c) AgNO3 and Cu(NO3)2 in: 2 As + 3 Cl2 2 AsC13 Cu + 2 AgNO3 Cu(NO3)2 + 2 Ag

Explanation / Answer

Ans 2 :

The rate of consumption and production of species are related to each other which is clearly visible in a chemical reaction.

a) 2CO + O2 = 2CO2

Here when 1 mole of O2 gets consumed , then 2 moles of CO2 are formed.

So rate of production of CO2 is double than the rate of consumption of O2.

b) 2As + 3Cl2 = 2AsCl3

The reaction indicates that 2 moles of As gives two moles of AsCl3.

So the rate of consumption of As is equal to the rate of production of AsCl3

c) Cu + 2AgNO3 = Cu(NO3)2 + 2Ag

Now according to the reaction ,when two mole of AgNO3 gets consumed , one mole of Cu(NO3)2 is produced.

So here the rate of consumption of AgNO3 is double than the rate of production of Cu(NO3)2

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