Experiemnt D Pre Lab

Experiemnt D Enthalpy of Reaction Pre-Laboratory Pre-Laboratory Assignment Name:

Chui Wai

Student ID:

2012600412

Group Member: Date of Experiment: 2!0"!2014

Demon#trator:

Comp$ete the fo$$o%in& 'ue#tion# before the $ab #e##ion and #ubmit thi# a##i&nment to (our demon#trator before be&innin& (our experiment)

Questions 1

Enth Enthal alpy py is a stat state e func functi tion on.. Expla Explain in wha whatt is mean meantt by the term state function!. * #tate fun+tion i# a propert( %ho#e ,a$ue doe# not depend on the path ta-en to rea+h that #pe+i.+ ,a$ue)

"

#$et #$etch ch lab label elle le% % ener energy gy pro pro&l &les es fo for r the the fo follo llowi wing ng reactions. 'n%icate the reactants an% pro%ucts. A( )*+),,*a( / 0a,*a( ( *",l(

)* +),,0aa( / * ",l(

*"g( / 12" , "g(

Energ y E a

C/"C/a' 3 Na/a'

/0

C/"CNaa' 3 /2$

Progr ess

Energ y E a

/2& 3 1!2 2

/50

/2$

Progr ess +

3hy is it necessary to $eep the )*+),,0as( in a tightly close% container4 C/"CNa ab#orb %ater mo$e+u$e# from the air and di##o$,e in it) So -eepin& it in a ti&ht$( +$o#ed +ontainer +an maintain the the parti+$e dr()