Tus nqi ntawm effusion rau cov roj yog inversely proportional rau lub square-hauv paus ntawm nws molecular mass (Graham txoj cai). Cov roj uas muaj qhov hnyav molecular qis tshaj plaws yuav ua kom nrawm tshaj plaws. Lub lightest, thiab yog li ntawd ceev tshaj, gas yog helium.
Dab tsi yog qhov nrawm tshaj plaws?
Diffusion sai dua ntawm qhov kub siab dua vim tias cov roj molecules muaj zog kinetic ntau dua. Effusion yog hais txog kev txav ntawm cov pa roj los ntawm lub qhov me me. Graham txoj cai lij choj hais tias tus nqi effusion ntawm cov roj yog inversely proportional rau lub square cag ntawm qhov loj ntawm nws hais.
Yuav ua li cas cov gases hauv qab no diffuse tus ceev tshaj O 2 CH 4 CO 2 Cl 2 CH 4 O 2 CO 2 Cl 2?
The methane gasmuaj cov molar qis tshaj plaws uas yog 16 amu uas txhais tau tias nws yuav kis tau sai tshaj plaws los ntawm lwm cov roj uas tau sau npe.
Cov pa roj twg sai dua ntawm N2 O2 CH4 thiab yog vim li cas?
Qhov sib dua roj yog, qhov nrawm dua nws yuav zoo li tawg. Qhov hnyav molecular ntawm CH4 yog 16, ntawm N2 28 thiab ntawm O2 32 raws li. Yog li ntawd CH4 yuav nthuav dav sai, thiab tom qab ntawd yuav N2, thiab thaum kawg O2 yuav pom diffusing.
Qhov twg yuav diffuse sai dua Cl2 lossis CO2?
Cov molar masses ntawm cov roj gases yog, CO2=44, Cl2=71, CH4=16, thiab O2=32. Yog li CH4 yog xav kom nrawm tshaj plaws thiab Cl2, qeeb tshaj plaws.
