Atps QUIMICA

Resolução dos exercícios

1) TK= TºC+273 P1.P1=P2.PV2 T1 T2
25=273=298K
1.1,5 = 1.V2
298 373

V2=1,5.373 = 1,877L 298

2) 2,0 = V2 299 373 V2=2,49 L

3) A- 1MD -------- 22,4 0,200---------- x = 4,48 B) 1,24.22,4 = 039 L 71 C) 1MOL 02--------22,4 0,100N2------------x X=0,100.22,4 X=2,24

1MOL 02--------- 22,4 0,05 ------------ X X=1.12X2,24 =3,36

4) P.V=N.RT P=0,847 V N=M=0,234=0,01.38 M.M NH3=14x1+1x3=17 P=v=N.RT 0,844.V=0,0138.0,08.303 V=0,0138.0,082.303 = 0,40

5) 1 MD 5,6 22,4 125,44
1CH4+202-----------1CO2+2H2O
1 MOL CH4=12X1+1X4=16g\1 MOL =12X1+16X2=44g

16g CH4---------- 44G CO2
4g CH4 -------------- X X=4.44 =11g CO2 16

16g CH4----------22,4 x------------------- 5,6 x=16.5,6=4g 22,4

6) TK=TºC+273 TK=25+273=298 [H3O+] .[oH-] 10-3.[OH-]=10-14 OH-=10-14(-3) 10-3 [OH-]=10-14 poH=log[oH-] poH=-log10-1 pH+poH=14 10+PoH=14 poH=14-3=11

7) [OH+]-10-14 pH=-log[OH-] pH=10-14.10-6 pH=10-14=10-14-(-6)=10-14+6=10-8 10-6 pH=-log10-8 pH=8 8) [H+]=10-14 pH=-log[OH-] [H+]=10-14.[OH-]=10-6 pH=10-14=10(-14) 10-14=10-10 10-6 pH= log10-10 pH=10

9)KW= [H=].[OH-] 10-4=[H=].10-4 [H+]=10-14=10-14-(-14)[H=]=10-10 10-14 ph=10

10) [H+]=10-8 Ph=-log 10-8 pH=-(-8) pH=8

11) [H+]=0,001mol\L pH=-log 0,001 pH=-(-3) Ph=3

12)KOH=39X1+16X1+1X1=56g 1Mol KOH ------------ 56 g X -------------0,28g