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Thermochemistry - 9
1.
Energy is absorbed
a) Products have higher energy
b) Negative Sign
c) Products have lower energy
d) Positive sign
2.
Heat is absorbed by system
a) Products have lower energy
b) Products have higher energy
c) Positive sign
d) Negative Sign
3.
Heat is absorbed by surrounding
a) Negative Sign
b) Energy is released
c) Positive sign
d) Products have higher energy
4.
Making of bonds
a) Positive sign
b) Products have higher energy
c) Negative Sign
d) Energy is released
5.
½ H2(g) H(g)
a) H0at
b) Hn0
c) Hc0
d) Hf 0
6.
HCl+NaOH H
2
O+NaCl
a) Hf 0
b) H0at
c) Hn0
d) Hc0
7.
C
2
H
5
OH(l)+3O
2
(g) 2CO
2
(g)+3H
2
O
a) Hf 0
b) H0at
c) Hn0
d) Hc0
8.
C(s)+O
2
(g) CO
2
a) Hc0
b) Hf 0
c) H0at
d) Hsol0
9.
NH
4
Cl(aq) NH
4
(aq)+Cl(aq)
a) Hn0
b) Hsol0
c) H0at
d) Hc0
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