Mohlala oa potso ea puisano mabapi le liphetho tsa peresente
Peresente ea chai ke mohopolo o sebelisoang khafetsa mafapheng a fapaneng, ho kenyeletsoa le k'hemistri, moruo le khoebo. K'hemistri, peresente ea chai e bolela papiso pakeng tsa chai ea 'nete ea karabelo ea lik'hemik'hale le chai ea khopolo-taba e ka fumanoang tlas'a maemo a matle. K'hemistring le khoebong, peresente ea chai hangata e sebelisoa ho bala bokhoni le tlhahiso ea ts'ebetso. Sengoloa sena se tla tšohla mathata a fapaneng a mehlala a amanang le chai ea peresente, hammoho le mehato e qaqileng ea ho a rarolla.
Ho Utloisisa Peresente ea Phaello
Ka kakaretso, peresente ea chai e ka baloa ho sebelisoa foromo:
\[ \text{Percent Yield} = \left( \frac{\text{Actual Yield}}{\text{Theorical Yield}} \right) \times 100\% \]
Ho utloisisa mohopolo ona ka botebo, ha re shebeng mehlala e 'maloa ea lipotso hammoho le mehato ea ho li rarolla.
Mohlala oa Potso ea 1: Likarabelo tsa Lik'hemik'hale
Potso:
Karabelo ea lik'hemik'hale pakeng tsa ligrama tse 10 tsa reactant A le ligrama tse 15 tsa reactant B e lokela ho hlahisa ligrama tse 20 tsa sehlahisoa sa C tlas'a maemo a loketseng (a khopolo-taba). Leha ho le joalo, chai ea 'nete ea karabelo ke ligrama tse 18 feela tsa sehlahisoa sa C. Bala peresente ea chai ea karabelo.
Puisano:
1. Tlhahlobo ea Lintlha tse Fanoeng:
– Tlhahiso ea khopolo-taba = ligrama tse 20 tsa sehlahisoa C
– Tlhahiso ea 'Nete = ligrama tse 18 tsa sehlahisoa C
2. Sebelisa Foromo ea Pheo ea Peresente:
\[ \text{Percent Yield} = \left( \frac{18}{20} \right) \times 100\% \]
3. Etsa Palo:
\[ \text{Percent Yield} = \left( 0.9 \right) \times 100\% = 90\% \]
Kahoo, peresente ea chai ea karabelo ke 90%.
Mohlala oa Potso ea 2: Tlhahlobo ea Lichelete
Potso:
Sepheo sa khamphani ke ho hlahisa phaello ea $100,000 ka kotara. Leha ho le joalo, phaello ea 'nete ke $85,000 feela. Bala peresente ea phaello e fihletsoeng ke khamphani.
Puisano:
1. Tlhahlobo ea Lintlha tse Fanoeng:
– Tlhahiso ea khopolo-taba (Sepheo) = \$100,000
– Sephetho sa 'Nete = \$85,000
2. Sebelisa Foromo ea Pheo ea Peresente:
\[ \text{Percent Yield} = \left( \frac{85,000}{100,000} \right) \times 100\% \]
3. Etsa Palo:
\[ \text{Percent Yield} = \left( 0.85 \right) \times 100\% = 85\% \]
Kahoo, peresente ea liphetho tse fihletsoeng ke k'hamphani ke 85%.
Mohlala oa Potso ea 3: Mokhoa oa Tlhahiso
Potso:
Fekthering, sepheo ke ho hlahisa diyuniti tse 500 tsa sehlahiswa ka beke. Leha ho le jwalo, fektheri e ka hlahisa diyuniti tse 450 feela. Bala peresente ya tlhahiso ya fektheri.
Puisano:
1. Tlhahlobo ea Lintlha tse Fanoeng:
– Tlhahiso ea khopolo-taba (Sepheo) = diyuniti tse 500
– Sephetho sa 'Nete = diyuniti tse 450
2. Sebelisa Foromo ea Pheo ea Peresente:
\[ \text{Percent Yield} = \left( \frac{450}{500} \right) \times 100\% \]
3. Etsa Palo:
\[ \text{Percent Yield} = \left( 0.9 \right) \times 100\% = 90\% \]
Kahoo, peresente ea chai ea tlhahiso ea fektheri ke 90%.
Mabaka a Amang Peresente ea Tlhahiso
Peresente ea chai e ka angoa ke lintlha tse 'maloa ho latela moelelo oo e sebelisoang ho oona. Mohlala, karabelong ea lik'hemik'hale, lintlha tse 'maloa tse ka amang peresente ea chai ke tse latelang:
1. Bohloeki ba Li-reactant: Li-reactant tse sa hloekang li ka ama liphello tsa karabelo.
2. Maemo a Teko: Mocheso, khatello le mongobo li ka ama tsela eo karabelo e etsahalang ka eona.
3. Phoso ea Teko: Phoso ea motho kapa liphoso tsa tekanyo le tsona li ka ba le phello.
Lefatšeng la khoebo le moruo, lintlha tse 'maloa tse susumetsang peresente ea liphetho ke:
1. Maemo a 'Maraka: Ho feto-fetoha ha litheko, tlhoko, le tlholisano ea 'maraka.
2. Bokgoni ba Tshebetso: Tsamaiso e sa sebetseng hantle e ka fokotsa peresente ya diphetho.
3. Tshebetso ya Basebetsi: Basebetsi ba sa hlahiseng hantle kapa ba etsang diphoso tse ngata mosebetsing.
Mekhoa ea ho Eketsa Peresente ea Tlhahiso
Kamora ho utloisisa mabaka a susumetsang, ho bohlokoa hape ho tseba mekhoa e ka sebelisoang ho eketsa peresente ea chai.
Ho Khemistri
1. Ho Sebelisa Li-reactant tsa Boleng bo Holimo: Etsa bonnete ba hore li-reactant tse sebelisoang li hloekile haholo.
2. Ho Ntlafatsa Maemo a Karabelo: Ho fetola mocheso, kgatello le mongobo bakeng sa maemo a matle.
3. Ho Fokotsa Liphoso tsa Liteko: Ho sebelisa lisebelisoa tse rarahaneng le tse nepahetseng haholoanyane ho fokotsa liphoso.
Khoebong
1. Bokgoni bo Eketsehileng ba Tshebetso: Ntlafatsa ketane ya phepelo le mekgwa ya tlhahiso.
2. Koetliso ea Basebetsi: Fana ka koetliso ea kamehla ho etsa hore basebetsi ba be le tlhahiso e ngata le ho fokotsa liphoso.
3. Tlhahlobo e tebileng ea 'Maraka: Ho sebelisa lintlha tsa tlhahlobo ho utloisisa maemo a 'maraka le ho theha maano a betere.
Qetello
Ho utloisisa chai ea liphesente ho bohlokoa haholo mafapheng a mangata, ho kenyeletsoa saense le moruo. Ho bala chai ea liphesente ho thusa ho lekola bokhoni le tlhahiso ea ts'ebetso e itseng. Ka ho utloisisa mokhoa oa ho e bala le lintlha tse e susumetsang, ebang ke k'hemistri, khoebong, kapa tlhahisong, re ka etsa lintlafatso tse fapaneng ho fihlela liphetho tse ntle ka ho fetisisa.
Sengoloa sena se hlahisitse mehlala e 'maloa ea mathata le mehato ea ho a rarolla ho fana ka kutloisiso e hlakileng ea mohopolo oa chai ea peresente. Ka kutloisiso e ntle, re tšepa ho khona ho sebelisa mohopolo ona maemong a fapaneng ha ho hlokahala.
