Tusaale Su'aal Dood ah oo ku saabsan Cadaadiska Osmotic ee Xalka
Pendahuluan
Cadaadiska Osmotic waa arrin muhiim ah oo ku jirta kiimikada iyo bayoolajiga. Waa cadaadiska loo baahan yahay si looga hortago socodka biyaha ee xuubka nus-gudbinta laga bilaabo xalka diirimaadka hooseeya ilaa xalka diirimaadka sare. Fahmidda cadaadiska osmotic waa mid muhiim u ah codsiyada kala duwan, sida hababka bayoolojiga ee unugyada, daaweynta biyaha, iyo naqshadeynta daawooyinka. Si aan si cad u sharaxno fikraddan, waxaan ka wada hadli doonnaa dhowr tusaale oo dhibaatooyin iyo xalal ah oo la xiriira cadaadiska osmotic ee xalalka.
Su'aal 1aad: Xisaabinta Cadaadiska Osmotic ee Xalka Sonkorta
Su'aal:
Laba garaam oo sucrose ah (C12H22O11) ayaa lagu milmaa biyo si loo sameeyo mug dhan 500 mL. Waa maxay cadaadiska osmotic ee xalkan marka uu gaaro 25°C? (Isticmaal R = 0.0821 L·atm·K^-1·mol^-1 iyo cufka molar ee sucrose = 342 g/mol).
Dood:
1. Xisaabi molarity-ga xalka:
Molarity (M) = \( \dfrac{\text{Tirada moles ee milanka}}{\text{Mugga xalka ee litir}} \)
Tirada burooyinka sucrose = \( \dfrac{2 \text{ g}}{342 \text{ g/mol}} \) = 0.00585 mol
Mugga dareeraha = 500 mL = 0.5 L
Molarity (M) = \( \dfrac{0.00585 \text{ mol}}{0.5 \text{ L}} \) = 0.0117 M
2. Xisaabinta cadaadiska osmotic:
Cadaadiska Osmotic (π) = MRT
Halkee:
M = 0.0117 mol/L
R = 0.0821 L atm K^-1 mol^-1
T = 25°C = 298 K (sababtoo ah heerkulku waa inuu ku jiraa Kelvin)
π = (0.0117 mol/L)(0.0821 La·atm·K^-1·mol^-1)(298 K)
π = 0.286 atm
Markaa, cadaadiska osmotic ee xalka sucrose waa 0.286 atm.
Su'aal 2: Cadaadiska Osmotic ee Xalka Electrolyte
Su'aal:
Waa maxay cadaadiska osmotic ee xalka NaCl oo leh xoog dhan 0.2 M heerkul ah 27°C? (Waxaa la ogyahay in NaCl uu yahay elektrolyt si buuxda ugu kala go'a Na+ iyo Cl- oo leh R = 0.0821 L·atm·K^-1·mol^-1)
Dood:
1. Xisaabi heerka kala-goynta:
NaCl → Na+ + Cl-
Maadaama NaCl uu gebi ahaanba kala go'ay, tirada guud ee walxaha ku jira xalka waa labanlaab tirada burooyinka NaCl.
Wadarta tirada walxaha = 2 × tirada burooyinka NaCl
2. Xisaabinta cadaadiska osmotic:
Cadaadiska Osmotic (π) = iMRT
Halkee:
i = 2 (sababtoo ah waxaa jira 2 nooc oo aayoon ah, Na+ iyo Cl-)
M = 0.2 mol/L
R = 0.0821 L atm K^-1 mol^-1
T = 27°C = 300 K
π = (2) (0.2 mol/L)(0.0821 L·atm·K^-1·mol^-1)(300 K)
π = 9.852 atm
Markaa, cadaadiska osmotic ee xalka NaCl ee 0.2 M ee 27°C waa 9.852 atm.
Su'aal 3: Cadaadiska Osmotic ee Xalka Gulukooska iyo Fructose
Su'aal:
Xalka waxaa lagu sameeyaa iyadoo lagu milmo 1 mole oo gulukoos ah (C6H12O6) iyo 1 mole oo fructose ah (C6H12O6) 1 litir oo biyo ah. Waa maxay cadaadiska osmotic ee xalka 37°C? (Isticmaal R = 0.0821 L atm K^-1 mol^-1)
Dood:
1. Xisaabi wadarta tirada burooyinka:
Wadarta tirada moles = 1 moles oo gulukoos ah + 1 moles oo fructose ah = 2 moles
2. Xisaabinta cadaadiska osmotic:
Cadaadiska Osmotic (π) = MRT
Halkee:
M = 2 mol/L (sababtoo ah waxaa jira wadarta 2 mol ee 1 litir oo biyo ah)
R = 0.0821 L atm K^-1 mol^-1
T = 37°C = 310 K
π = (2 mol/L)(0.0821 La·atm·K^-1·mol^-1)(310 K)
π = 50.942 atm
Markaa, cadaadiska osmotic ee xalka oo ka kooban 1 mole oo gulukoos ah iyo 1 mole oo fructose ah oo ku jira 1 litir oo biyo ah heerkul ah 37°C waa 50.942 atm.
Su'aal 4: Isku darka laba walxood oo aan ahayn elektrooliit
Su'aal:
Waa maxay cadaadiska osmotic ee isku darka oo ka kooban 0.5 mol oo urea ah (CO(NH2)2) iyo 0.5 mol oo ethanol ah (C2H5OH) 1 litir oo biyo ah heerkul ah 20°C? (R = 0.0821 L·atm·K^-1·mol^-1)
Dood:
1. Xisaabi tirada guud ee burooyinka ku jira xalka:
Wadarta tirada moles = 0.5 mol urea + 0.5 mol ethanol = 1 mol
2. Xisaabinta cadaadiska osmotic:
Cadaadiska Osmotic (π) = MRT
Halkee:
M = 1 mol/L (sababtoo ah waxaa jira wadarta 1 mol ee 1 litir oo biyo ah)
R = 0.0821 L atm K^-1 mol^-1
T = 20°C = 293 K
π = (1 mol/L)(0.0821 La·atm·K^-1·mol^-1)(293 K)
π = 24.0633 atm
Markaa, cadaadiska osmotic ee isku darka ka kooban 0.5 mol oo urea ah iyo 0.5 mol oo ethanol ah oo ku jira 1 litir oo biyo ah 20°C waa 24.0633 atm.
Gabagabo
Tusaalahan dhibka kor ku xusan, waxaan fahmi karnaa sida loo xisaabiyo cadaadiska osmotic xaalado kala duwan. Cadaadiska osmotic waxaa saameeya arrimo ay ka mid yihiin fiirsashada xalka, nooca milanka (elektrolyte ama aan elektrolyte ahayn), iyo heerkulka. Falanqaynta xisaabta ee ka dambeysa cadaadiska osmotic waxay ku tiirsan tahay mabaadi'da aasaasiga ah ee uu qeexayo sharciga gaaska ee ku habboon. Iyadoo si fiican loo fahmayo fikraddan, waxaan ku dabaqi karnaa xaalado kala duwan oo wax ku ool ah oo ku saabsan kiimikada iyo bayoolajiga.
