Thermochemistry 2: Zn w/ HCl & Sulfuric Acid -150 kJ

[ph_lover3294]

hi

zinc reacts with HCl according to the eq

Zn + 2HCl ------> ZnCl2 + H2 , delta H= -150 kj

* IF SULPHURIC ACID IS USED INSTEAD HCl ..jow many moles of sulphuric acid react with excess amount of zinc so the change in heat content is -150 kj

 

[Borek]

You have to try by yourself first.

Besides, it looks like a homework question to me, and this is not a forum for HW.

 

[ph_lover3294]

hi

firstly its not a homework question

secondly i tried but I am not sure

i said that the answer will be (one mole )as Zn +H2SO4---->ZnSO4 + H2
but i don't know is it write or wrong ?

thank u

 

[Borek]

Write net ionic reaction equation, it should be obvious then. But you seem to be on the right track.