1.

In the following reaction : CaC_(2) (s) + 2H_(2) O (l) rarr C_(2) H_(2) (g) + Ca (OH)_(2) (s) Suppose 16 gm CaC_(2) reacts with 9 gm water and acetylene formed is collected in 10 litre vessel at temperature 300 K then its pressure will be :

Answer»

`0.75` ATM
`0.5` atm
`0.6` atm
`0.25` atm

Solution :`{:(,CaC_(2) (s),+,2H_(2)O (L),rarr,C_(2)H_(2) (g),+,Ca(OH)_(2) (s),),("MOLE",(1)/(4) "mole",,(1)/(2)"mole",,-,,-,),(-,,,-,,(1)/(4) " mole",,(1)/(4) "mole",):}`
`PV = nRT`
`P = (0.25 xx 0.08 xx 300)/(10)`
`P = 0.6 atm`


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