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CBSE Class 11-science Answered

Answer is option 1... Plzz explain why option 4 is wrong..
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Asked by jhajuhi19 | 28 May, 2019, 09:38: AM
answered-by-expert Expert Answer
The van der waal's equation for 1 mole is:left square bracket P plus a over V squared right square bracket left square bracket V minus b right square bracket equals R T A t space l o w space p r e s s u r e minus A t space l o w space p r e s s u r e comma space V o l u m e space o f space g a s space w i l l space b e space m o r e space a n d space t h e r e f o r e comma space b space c a n space b e space i g n o r e d space i n space c o m p a r i s o n space t o space V. thin space T h u s comma left square bracket P plus a over V squared right square bracket V equals R T P V equals R T minus a over V Z equals 1 minus fraction numerator a over denominator R T V end fraction space space space space space space space space space space space space space space space space space space space space space space space space Z less than 1 space A t space h i g h space p r e s s u r e minus a t space h i g h space p r e s s u r e comma space v o l u m e space o f space g a s space b e i n g space l o w space a n d space b space s h o u l d space space n o t space b e space i g n o r e d. space H o w e v e r space t h e space t e r m space a over V squared space m a y space b e space n e g l i g i b l e space i n space c o m p a r i s o n space t o space p r e s s u r e. P left parenthesis V minus b right parenthesis equals R T P V equals R T plus P b Z equals 1 plus fraction numerator P b over denominator R T end fraction space space space space space space space space space space space space space space space space space space space Z greater than 1 S o space B space g a s space i s space n o n space i d e a l space space a t space h i g h space p r e s s u r e space b e c a u s e space Z less than 1 S o space o p t i o n space left parenthesis 1 right parenthesis space i s space c o r r e c t O p t i o n space 4 space i s space n o t space c o r r e c t space b e v c a u s e space g a s space w i l l space b e h a v e space a s space a n space i d e a l space g a s space w h e n space Z equals 1.
Answered by Ravi | 28 May, 2019, 11:33: AM
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