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Calorimetry and Standard Enthaply question: Manganese reacts with sulfuric acid to produce manganese (II) sulfate and...

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Chemistry

Calorimetry and Standard Enthaply question: Manganese reactswith sulfuric acid to produce manganese (II) sulfate and hydrogengas.

Mn(s) + H2SO4(aq) ---> MnSO4(aq) + H2(g) When 1.230g of Mn iscombined with enough sulfuric acid to make 100.0mL of solution in aThermo bottle calorimeter (heat capacity is 58.9 J/°C), all of theMn reacts raising the temperature of the solution from 24.1°C to34.5°C. (Assume that the specific heat capacity of the solution is4.18 J/g°C and the density is 1.02g/mL.)

A) Is this reaction exothermic?

B) What is the heat (q) in Kg for the reaction according to theprocess described above?

C) Find ∆H°rxn for the chemical reaction as written above.

D) Consider the above given reaction. How many grams ofmanganese are needed if 895.0kJ of heat are released?

Answer & Explanation Solved by verified expert
3.9 Ratings (715 Votes)
A The reaction is exothermic since solution tempertaure increased which shows absorbtion of heat released in reaction by solution B Heat    See Answer
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