8/16/2019 guia N° 1 de ph y poh- grade 12°

1/3

Saint Patrick SchoolNatural Sciences Department - ChemistryMiss Daniela Gatica HenrÍquez20! - Gra"e# 2$

1GUÍA DE QUÍMICA

 NOMBRE:_______________________________________________FECHA:___________________ 

APRENDIZAJES ESPERADOS: Aplicar coc!p"o # $%r&'la r!lacioa(a co !l )ra(o (! Aci(!* #  Ba+ici(a( (! la+ +'+"acia+ ,'-&ica+.

HABILIDADES: CONOCER –APLICAR-EVALUAR 

pH, pOH. Escala de pH. Neutral!ac"#

S! co+i(!ra ,'!:  pH / 0lo) H23

Por lo "a"o: pOH / 0 lo) OH03

4'!)o po(!&o+ (!+p!5ar:H236/ 0 a"ilo) pH

OH03 / 0 a"ilo) pOH

S! (!7! "!!r ! c'!"a ,'! la escala de pH !+:

8 98 1;8

 

8/16/2019 guia N° 1 de ph y poh- grade 12°

2/3

Saint Patrick SchoolNatural Sciences Department - ChemistryMiss Daniela Gatica HenrÍquez20! - Gra"e# 2$

EJERCICIOS

1.0 Calc'l! !l pH o pOH (! lo+ +i)'i!"!+ co&p'!+"o+:a NaOH / 8889 M

 7 HCl / 8888K; Mc NaOH / 88L9 M( HCl / 888888; M! NaOH / 888888K M$ HCl / 8888 M

.0 Calc'lar la coc!"raci% (! H2 # OH0 +i +! "i!!:a pH / ;L 7 pOH / 1c pH / 1L( pOH / 18

! pH / 1$ pOH /

K.0 D!"!r&i! !l pH # !l pOH +i +! pr!para la+ +i)'i!"!+ +ol'cio!+:a 18 )ra&o+ (! NaOH ! 1 4 7 88 &) (! NaOH ! ;888 &4c 8 &4 (! HCl (! coc!"raci% 888 M # +! (il'#! a+"a 88 &4( &4 (! HCl (! coc!"raci% 881L M # +! (il'#! a+"a 8 &4! ; )ra&o+ (! NaOH ! 88 &4.$ 8 &4 (! HCl (! coc!"raci% 8888L M # +! (il'#! a+"a 188 &4.

;.0 Co&pl!"! la +i)'i!"! "a7la:

E+p!ci! H23 OH03 pH pOH NaOH 8888 M

HCl 1HCl

 NaOH 8888K M NaOH 88 M

HCl L NaOH ; NaOH 88888; M

 NaOH 888881 MHCl 1L

 NaOH 1

.0 Calc'l! la coc!"raci% !c!+aria para la !'"rali*aci% (! la+ +i)'i!"!+ +ol'cio!+ ! i(i,'! !l pH (! la +ol'ci% a !'"rali*ar:

a K ) (! OH ! 88 &4 7 8 ) (! HNOK ! 18 &4 (! +ol'ci%

8/16/2019 guia N° 1 de ph y poh- grade 12°

3/3

Saint Patrick SchoolNatural Sciences Department - ChemistryMiss Daniela Gatica HenrÍquez20! - Gra"e# 2$

Kc 8 &) (! NaOH ! 18 &4