Iwu gas kacha mma - nsogbu na ngwọta

1. M na-azụ gas n'ime akpa mechiri emechi na mbụ nwere olu V na okpomọkụ T. Okpomọkụ ikpeazụ bụ 5/4T ebe nrụgide ikpeazụ bụ 2P. Kedu olu ikpeazụ nke gas ahụ?

A maara:

Mpịakọta mbụ (V1 ) = V

Okpomọkụ mbụ (T 1 ) = T

Okpomọkụ ikpeazụ (T2 ) = 5/4 T

Nrụgide mbụ (P1 ) = P

Nrụgide ikpeazụ (P2 ) = 2P

Achọrọ: Mpịakọta Ikpeazụ (V 2 )

Ngwọta:

Iwu gas kacha mma - nsogbu na ngwọta 1

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2. Chọpụta olu nke 2.00 mol nke gas (gas kacha mma) na STP. STP = Okpomọkụ na Nrụgide Ọkọlọtọ.

A maara:

Mkpụrụ gas (n) = 2 mole nke ice

Okpomọkụ ọkọlọtọ (T) = 0 o C = 0 + 273 = 273 Kelvin

Nrụgide ọkọlọtọ (P) = 1 atm = 1.013 x 10 5 Pa

Igwe ikuku zuru ụwa ọnụ (R) = 8.315 Joule/mol e .Kelvin

Achọrọ : Olu nke gas (V)

Ngwọta:

Nha nke iwu gas kacha mma (n'ọnụọgụ moles, n)

Iwu gas kacha mma - nsogbu na ngwọta 2

Olu nke mole abụọ nke gas bụ lita 44.8.

Olu nke otu mole nke gas bụ lita 45.4 / lita 2 = lita 22.4.

Olu nke 1 mole nke gas ọ bụla bụ lita 22.4.

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3. Lita 4 nke gas oxygen nwere okpomọkụ nke 27°C na nrụgide nke 2 atm (1 atm = 10 5 Pa) n'ime akpa mechiri emechi. Igwe gas zuru ụwa ọnụ (R) = 8.314 J.mol e −1 .K −1 na nọmba Avogadro ( N \ A ) = 6.02 x 10 23 molekul/mol e . Kedu ihe bụ molekul nke gas oxygen dị n'ime akpa ahụ?

A maara:

Olu nke gas (V) = lita 4 = 4 dm 3 = 4 x 10 -3 m 3

Okpomọkụ nke gas (T) = 27 o C = 27 + 273 = 300 Kelvin

Nrụgide nke gas (P) = 2 atm = 2 x 10 5 Pa

Igwe gas zuru ụwa ọnụ (R) = 8.314 J.mol e −1 .K −1

Nọmba Avogadro (N A ) = 6.02 x 10 23

Achọtara : Kedu ihe bụ molekul nke ikuku oxygen dị n'ime akpa ahụ (N)

Ngwọta:

Iwu gas kacha mma - nsogbu na ngwọta 3

N'ime otu molekụl nke gas oxygen, e nwere molekụl oxygen 1.93 x 10 23 .

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4. Akpa nwere gas neon (Ne, atomic mass = 20 u) na okpomọkụ na nrụgide ọkọlọtọ (STP ) nwere olu nke 2 m3 . Chọpụta oke gas neon!

A maara:

Ntụ atọm nke neon = gram 20/mol e = 0,02 kg/mol e

Okpomọkụ ọkọlọtọ (T) = 0 o C = 273 Kelvin

Nrụgide ọkọlọtọ (P) = 1 atm = 1.013 x 10 5 Pascal

Olu (V) = 2 m 3

Achọrọ : oke (m) nke gas neon

Ngwọta:

Na okpomọkụ na nrụgide ọkọlọtọ (STP), 1 mole nke gas ọ bụla, gụnyere gas neon, nwee olu 22.4 liters = 22.4 dm3 = 0.0448 m3.

Iwu gas kacha mma - nsogbu na ngwọta 4

N'olu nke 2 m3 , e nwere 44.6 mole nke gas neon.

Oke atom nke gas neon dị n'ime ya bụ gram 20/mole.

Nke a pụtara na n'ime otu mole, e nwere gram 20 ma ọ bụ 0.02 kg nke gas neon. N'ihi na n'ime otu mole, e nwere 0.02 kg nke gas neon, mgbe ahụ n'ime mole 44.6, e nwere mole 44.6 x 0.02 kg/mole = 0.892 kg = gram 892 nke gas neon.

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