Kafedra: Ximiya Ózbetinshe júmisi

16) Taza HNO₃ tiń tiǵizliǵi 1.26 gr/ml, eritpesiniń tigizliǵi 1.052 gr/ml bolsa eritpeniń molyal konsentratsiyasin aniqlań.
Sheshiliwi:
1,26-- --0,052 -----1 ml HNO₃
1,052
1--- . --0,208-----4 ml suw
4 ml suv= 4 g
1 ml HNO₃=>1·1,26=1,26 g=> 0,02 mol
4 g suwda ------0,02 mol
1000 g da----- x=5 molyal J=6M


17) 10 gr metil spirtiniń 100 gr eritpesinde neshe gramm suw qosilganda, eritpeniń titr konsentratsiyasi 0,1 g/ml ge teng boladi.(p=1,3)
Sheshiliwi:
Titr konsentratsiya degenimiz 1ml eritiwshide erigen zattiń massasi.
Bul jerde erigen zat massasinan paydalangan halda eritiwshi ml in tawip alamiz:
1ml---------0,1g/ml
x------------10 x=100ml
Ham eritiwshi mlilitri jardeminde eritpe massasin tawip alamiz:
M=pV M=1,3*100ml=130gr eritpe
Eritpege 100 ge suw quyilgannan keyin eritpe 130 gr bolgan.
100-130=30gr
Demek eritpege 30gr suw quyilgan. J=30gr H₂0


18) Molyalligi 2 mol/kg bolgan AgNO₃ diń toyinǵan eritpesiniń eriwshenlik koefsiyentin tawiń.
Sheshiliwi:
1000gr------2mol/kg erigen
100grH₂0---x x=0,2mol erigen zat AgNO₃
Eriwsheńlik koefsiyenti degenimiz 100gr eritiwshide erigen zattin massasi:
Demek 100gr H₂O------170gr AgNO₃ *0,2mol= 34gr
J=34gr
19) 240 g eritpede eriwshi zat massasi eritiwshinikiden 15/33 marta kóp. Olardiń massalari ayirmasin tawiń.
Sheshiliwi:

1. 
   Keliń eriwshi zatti a , al eritiwshini b dep alayiq.
   

a+b=240gr a=240 b=
a+ a=240 a=165gr
Bul jerde a=165 eriwshi zat, b= a eritiwshi

2. 
   Bul jerde eritpe massasinan eriwshi zat massasin alsaq eritiwshi kelip shigadi
   

240-165=75

3. 
   Endi erigen zattin massasinan keying eritiwshi massasin alsaq ayirmashiligi kelip shigadi:
   

165-75=90 J=90