Question

Ajutor!
Numeste reactiile dipa efectul termic indicat (+Q, -Q). Egaleaza ecuatiile reactiilor:
a)H2+Cl2--->HCl+Q d)Fe+O2--->Fe3O4+Q
b)H2+Br2--->HBr+Q e)HgO--->Hg+O2-Q
c)H2+I2--->HI-Q f)KClO3--->KCl+O2-Q

Si explicatimi va rog cum se Egaleaza ecuatiile, avem deja o luna de cind le studiem si tot nu le pot intelege.

Multumesc!

Answer 1

a)H2+Cl2=2HCl+Q-exoterma. b)H2+Br2=2HBr +Q-exoterma c)H2+I2=2HI-Q-endoterma. d)3Fe+2O2=Fe3O4 e)2HgO=2Hg+O2-Q-endoterma f)2KClO3=2KCl+3O2-Q-endoterma