Question
Asked Nov 22, 2019
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17. For which one of the following reactions or processes is AH positive?
I. water freezes
II. H2(g) burns to form H2O(g)
III. a process where q<0
IV. popsicle melting
b. III
с. II
d. I
а. IV
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17. For which one of the following reactions or processes is AH positive? I. water freezes II. H2(g) burns to form H2O(g) III. a process where q<0 IV. popsicle melting b. III с. II d. I а. IV

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Expert Answer

Step 1

Water freezes is exothermic the...

H2 burns to form H2O,
H2 burns with oxygen gives H2O, it is endothermic reaction, therefore AH positive
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H2 burns to form H2O, H2 burns with oxygen gives H2O, it is endothermic reaction, therefore AH positive

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