Pengukuran pH

Pengukuran PH Larutan Oleh: Rosita Qori L 140341603337 Siti Ma'rifah 140341601740 Thesa Ihtiar D 140341505862 !"ita De#$ 140341605176

Pengertian PH Larutan %& aalah era(at )easa*a" $a"+ i+!"a)a" !"t!) *e"$ata)a" ti"+)at )easa*a" ata! )e,asaa" $a"+ i*ili)i oleh s!at! lar!ta" $a"+ i!)!r e"+a" s)ala 0 sa*-ai e"+a" 14.

Pengertian Larutan Penyangga Lar!ta" -e"$a"++a /,!ffer sol!tio" aalah lar!ta" $a"+ *e*-!"$ai -& $a"+ sa"+at sta,il. i)a s!at! asa* ata! ,asa ita*,ah)a" -aa lar!ta" -e"$a"++a *a)a -& tia) ,er!,ah seara si+"ifi)a".De"+a" ara lai" *e"a*,ah)a" air )e ala* ata! *e"+!a-)a" air ari lar!ta" -& (!+a tia) *e"+!,ah -& lar!ta" ,!ffer.

Indikator pH I"i)ator aalah atat $a"+ *e"!"(!))a" i"i)asi ,er,ea ala* lar!ta" asa* ,asa a" "etral. ara *e"e"t!)a" se"$a#a ,ersifat asa* ,asa ata! "etral a-at *e"++!"a)a" )ertas la)*!s a" lar!ta" i"i)ator ata! i"i)ator ala*i.

1. ertas La)*!s ar"a )ertas la)*!s ala* lar!ta" asa* lar!ta" ,asa a" lar!ta" ,ersifat "etral ,er,ea. 9a !a *aa* )ertas la)*!s $ait!:

Macam Kertas Lakmus a. La)*!s *erah La)*!s *erah ala* lar!ta" asa* ,er#ar"a *erah a" ala* lar!ta" ,asa ,er#ar"a ,ir!. ,. La)*!s ,ir! La)*!s ,ir! ala* lar!ta" asa* ,er#ar"a *erah a" ala* lar!ta" ,asa ,er#ar"a ,ir!. . La)*!s *erah *a!-!" ,ir! ala* lar!ta" "etral tia) ,er!,ah #ar"a

,. Lar!ta" I"i)ator  



o"toh ari lar!ta" i"i)ator aalah: lar!ta" *etil (i"++a /Metil Ora"+e ; MO %aa -& )!ra"+ ari 6 lar!ta" i"i ,er#ar"a (i"++a sea"+)a" -aa -& le,ih ari 7 #ar"a"$a *e"(ai )!"i"+. i"i)ator fe"olftali" /%he"ol-htalei" ; -- -& i ,a#ah 8 fe"olftali" tia) ,er#ar"a a" a)a" ,er#ar"a *erah a"++!r a-a,ila -& lar!ta" i atas 10.

3. I"i)ator 9la*i =>: ar"a )!lit *a"++is aalah !"+! /ala* )eaaa" "etral.