Question
Asked Mar 17, 2020
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Indicate which of the following reactions results in a positive ASsys.
2 Na(s) +Cl, (g) NaCl(s)
b. Zn(s)+2 HCl(aq) 5 ZnCl, (aq) +H, (g)
4 Fe(s) + 3 0, (g) 5 2 Fe,O,(s)
d. 2 H, (g)+0,(g) 5 2 H,0(g)
Ba(NO,),(aq) + Na, SO,(aq) 5 BaSO,(s) + 2 NaNO, (aq)
a.
c.
e.
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Indicate which of the following reactions results in a positive ASsys. 2 Na(s) +Cl, (g) NaCl(s) b. Zn(s)+2 HCl(aq) 5 ZnCl, (aq) +H, (g) 4 Fe(s) + 3 0, (g) 5 2 Fe,O,(s) d. 2 H, (g)+0,(g) 5 2 H,0(g) Ba(NO,),(aq) + Na, SO,(aq) 5 BaSO,(s) + 2 NaNO, (aq) a. c. e.

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The sign of ΔS is determined by change in the number of moles of gas present in the reaction.

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