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FIA DE LUCRU DE PROGRESCALCULE PE BAZA ECUAIILOR CHIMICE
Se arde 200 g sulf !u"#$as%& "u 20' #(!ur#)%*#+ Pr$dusul
re,ul)a) se -ar-$)ea,% d#,$l.%& / 10(L a!% f$r(3du4se $
su-s)a*% A "are /r$5e5)e s$lu*#a 5# 63r)#a de )ures$l+ 7 .as se
#)r$du"e s$lu*#e des$d% "aus)#"% de "$"e)ra*#e 80'+ Se "ere9
a& .$lu(ul de $:#ge "$su(a) / "$d#*## $r(ale !e)ru arderea
sulfulu#;-& (asa de su-s)a*% A re,ul)a)% / a d$ua
rea"*#e;"& "a)#)a)ea de sare d# s$lu*#a f#al%;d& (asa de
a!% d# s$lu*#a f#al%;e& "$"e)ra*#a s$lu*#e# r%(ase / .as+
O-s< Pr$-le(a "$*#e u 5#r de rea")## !e "are se lu"rea,%
su""es#.+ Ceea "e se de)er(#% !e !r#(a rea"*#ese f$l$se5)e "a 5#
"u$s"u)% !e a d$ua rea"*#e+ Se "$)#u% re,$l.area !e "elelal)e
rea"*##+
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RASPU=SURI LA PROBLEM>a& ? ($l# O2@ 2 L
-& ? ($l# H2SO1 @ 80g"& ? ($l# =a2SO1@ 10gd& 0 ($l#@
0g H2O
10 g H2O ##*#al%? ($l# H2O rea"*#$a)%@ 0 g20 g H2O e:"es800g
=aOH4 (d000 g s$lu*#e (s00g H2O / s$lu*#a de =aOH0?0 g a!%
)$)al%
e& (s 0g@ "4 1@?'
IAI C>+
Sulful e:#s)% / a)ur% / s)are a)#.% @ dar 5# su- f$r(% de
"$(-#a*## 4 sulfur#@ sulfa)#@ sulf#)#
Se g%se5)e / uele su-s)a*e $rga#"e9 !e)r$l@ "%r-u#@ !la)e 5#
"6#ar a#(ale
M$le"ula de sulf es)e al"%)u#)% d# a)$(# $")aa)$(#"%& S
Es)e s#gura su-s)a*% "are eu)ral#,e,% (er"urul Arde "u fla"ar%
al-as)r% 5# dega% u ga, "u (#r$s e!l%"u) SO2 "are are
!r$!r#e)%*#
de,#fe")a)e F$r(ea,% d# s# )r#$:#d de sulf@ ($le"ule "$.ale)e@
ude sulful se leag% !r# leg%)ur% du-l% "u
$:#geul
Se f$l$se5)e la .ul"a#,area "au"#u"ulu# 5# fa-r#"area e-$#)e# 7
a(es)e" "u "%r-ue 5# "l$ra) de !$)as#u f$r(ea,% !raful de !u5"a 5#
a(es)e"ul !e)ru
ar)#f#"## Es)e /)re-u#*a) la !re!ararea u$r #se")#"#de agr#"$le
5# / (ed#"#%@ "$)ra -$l#l$r de !#ele
