A 50.00 mL volume of a 0.100 M H:SOs solution was titrated with a 0412 M solutio

Question

A 50.00 mL volume of a 0.100 M H:SOs solution was titrated with a 0412 M solution of NaOH. Write the balanced chemical equation for the reaction described above and calculate the volume, mL of NaOH needed to react with all of the HaSO4? (6 pts.) 1. 2. Write the thermochemical equation for the reaction of glucose (CaHi206) with oxygen given that 187 g of glucose praduced 2.93x10- kdJ of energy. (5 pts.) Use Hess's Law to calculate the enthalpy change for this overall reaction from the following three equations. Show your work for full credit. (6 pts.) 3. CH4(g) + NH3(g) HCN(g) + 3H2(g) N2(g) + 3H2(g) 2NH3(g) C(graphite) + 2H2(g) CH4(g) Ha(g) + 2C(graphite) + N2(g) 2 HCN(g) AH- -91.8 k.J AH- -74.9 kJ AH-270.3 kJ

Explanation / Answer

Answer 1 Balanced Equation

2 NaOH + H2SO4-----> Na2SO4 + 2 H2O

Using Molarity equation with volume

MNaOH * VNaOH = MH2SO4 * VH2SO4

VNaOH = (50 ml * 0.100 M) / 0.412 M = 12.1359 mL

Volume of NaOH = 12.1359 mL

Answer 2) Thermodynamic reaction between glucose and oxygen

C6H12O6 + 6O2 6CO2 + 6H2O

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