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Ees413:Aquatic Chemistry Question Paper

Ees413:Aquatic Chemistry 

Course:Aquatic Chemistry

Institution: University Of Eldoret question papers

Exam Year:2014



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1.What is aquatic chemistry?[4m]
2.State the three laws of thermodynamics[5m]
3.Given that when 1.00mol of Zn reacts with excess HCl, 1.00mol of H2 is produces.Calculate the work done by the chemical system in pushing back the atmosphere[4m]
4.a.What is enthalpy?[3m]
b.Calculate the H of the reaction when ammonia reacts with carbon dioxide to form urea and water.Below are the respective standard enthalpies of formation in kJ/mol,at 25C:NH3(g)=-45.9;CO2(g)=-393.2;H2O(l)=-285.8[4m]
5.a.What is Lewis acid?[2m]
b.What are amphiprotic species?[2m]
c.In the following chemical equations,label each species as an acid or a base.Show the conjugate acid-base pairs
i.HCO3(aq)+HF(aq)>H2CO3(aq)+F-(aq)[3m]
ii.HCO3(aq)+OH-(aq)>CO3^2-(aq)+H2O(l)[3m]




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