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16
AgZq_gb_ jG jZkl\hjZ khhl\_lkl\m_l
-
Ijh\_jyxl jG bg^bdZlhjhf
:eyfh\kdh]h ?keb jG f_gvr_ jZkl\hj ih^s_eZqb\Zxl g_kdhevdbfb
dZieyfb s_ehqb _keb jG [hevr_ ih^dbkeyxl kheyghc dbkehlhc ^h
aZ^Zgghc\_ebqbgujG
F jZkl\hj
NaOH
]
NaOH
jZkl\hjyxl \e jZkl\hjZ
fheyjghklv mklZgZ\eb\Zxl ih nbdkZgZevghfm
H
2
SO
4
\ ijbkmlkl\bb
f_lbehjZg`Z
3. 0.1 %-
gucjZkl\hjn_ghenlZe_bgZ
4. 3.5 %-
guc jZkl\hj
NaF
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^bklbeebjh\Zgghc\h^u
JZkl\hj ^he`_g ^Z\Zlv k n_ghenlZe_bghf keZ[h
-
jhah\mx hdjZkdm Ijb
hlkmlkl\bb lZdh\hc jZkl\hj ih^s_eZqb\Zxl ?keb hdjZkdZ y\gh jhah\Zy
jZkl\hjg_cljZebamxljZkl\hjhf
HCl.
;MN?JGHKLVIHQ<
;mn_jghklvihq\u
–
wlhkihkh[ghklvihq\uih^^_j`b\Zlvk\hckl\_ggmx
_cj_Zdpbx ijb ^h[Z\e_gbb d ihq\_ dbkehlu beb s_ehqb AZ\bkbfhklv
j_Zdpbb \h^ghc kmki_gabb ihq\u hl dhebq_kl\Z ^h[Z\e_gghc d g_c dbkehlu
HCl
bebs_ehqb
NaOH
bah[jZ`Zxl]jZnbq_kdb\\b^_djb\uo[mn_jghklb
Ijb ^_ckl\bb gZ qbkluc i_khd \h^u \_ebqbgZ jG g_ f_gy_lky
Ijb
^h[Z\e_gbbg_[hevrh]hdhebq_kl\Zdbkehluj_adhbaf_gy_lkyagZq_gb_jG^h
1.5-
AZl_f \_ebqbgZ jG baf_gy_lky ihkl_i_ggh Ijb ^h[Z\e_gbb s_ehqb
lZd`_ gZ[ex^Z_lky j_adh_ baf_g_gb_ jG AgZq_gby jG gZ djb\hc [mn_jghklb
i_kdZ ijZdlbq_kdb khhl\_lkl\mxl jG \h^guo jZkl\hjh\ dbkehlu beb s_ehqb
BgZydZjlbgZgZ[ex^Z_lkyijbbamq_gbbihq\
>_jgh\h
-
ih^ahebklZy ihq\Z bf__l [he__ iheh]mx ih kjZ\g_gbx k
i_kdhf djb\mx [mn_jghklbl_ ijb ^h[Z\e_gbb d ihq\_ dbkehlu beb
s_ehqb j_Zdpby kj_^u f_gy_lky g_ lZd j_adh < s_ehqghf ie_q_ djb\hc
jZaebqby\ujZ`_gukbevg__Djb\Zy[mn_jghklbq_jgha_fZbf__l_s_[he__
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