[LukeyJB]

6) Use your answer from question 5 (6.8) to calculate the heat given out during this experiment. Assume a density of 1.00gcm-³ and a specific heat capacity of 4.18.

q=mc(Delta)T
q= 1x4.18x6.8
q=28.4/1000
q=0.0284kjmol-1

7) The HCl used in Task 1 had a concentration of 1.00moldm-³. Calculate the amount, in moles, of HCl present in the 25.0cm³ (0.025dm³) of this acid.

1.00x0.025 = 0.025mol

How would I do this question?

8) Use your answers from questions 6 and 7 to calculate the enthalpy change, in kJmol-1, for the reaction between one mole of HCl and the glass cleaner.

[thegodofgod]

(Original post by LukeyJB)
How would I do this question?

8) Use your answers from questions 6 and 7 to calculate the enthalpy change, in kJmol-1, for the reaction between one mole of HCl and the glass cleaner.

Use the formula:





Since heat is given out, the reaction is exothermic, and thus delta H is negative. Therefore,