

TERMOKIMIA
Presentation
•
Chemistry
•
11th Grade
•
Easy
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0 Slides • 3 Questions
1
Multiple Choice
Sebanyak 9,4 gram KBr dilarutkan dalam 105 gram H2O, pada suhu 23,60C dalam suatu wadah plastik . Apabila diasumsikan tidak ada kalor yang dipertukarkan antara wadah plastik dan lingkungannya ,maka suhu akhir sistem adalah ....0C( diketahui Mr KBr =119 , ΔH KBr =19,9 kj/mol, c larutan = 4,184 j/g οC
20,0
20,3
26
26,8
3,65
2
Multiple Choice
Kalor pembentukan NO dari unsur - unsurnya sebesar + 90 kj/mol .ika diketahui energi ikatan NΞ N = 941 kj/mol dan ,O = O = 499 kj/mol, maka besarnya energi disosiasi ikatan N = O adalah ....
630 kj/mol
720 kj/mol
756 kj/mol
810 kj/mol
1.350kj/mol
3
Multiple Choice
Diketahui :
ΔH0f TiCl4 (g) = -763 kj/mol
ΔH0f H2O (l) = -286 kj/mol
ΔH0f TiO2 (s) = -945 kj/mol
ΔH0f HCl (g) = -92 kj/mol
Maka ΔH untuk reaksi : TiCl4(g) + 2H2O(l) → TiO2 (s) + 4HCl(g) sebesar....kj/mol
-264
12
18
22
296
Sebanyak 9,4 gram KBr dilarutkan dalam 105 gram H2O, pada suhu 23,60C dalam suatu wadah plastik . Apabila diasumsikan tidak ada kalor yang dipertukarkan antara wadah plastik dan lingkungannya ,maka suhu akhir sistem adalah ....0C( diketahui Mr KBr =119 , ΔH KBr =19,9 kj/mol, c larutan = 4,184 j/g οC
20,0
20,3
26
26,8
3,65
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