Chemistry Practice Problems Entropy Practice Problems Solution: Sodium reacts violently with water according to th...

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Solution: Sodium reacts violently with water according to the equation: 2 Na(s) + 2 H2O(l) →2NaOH(aq) + H2(g) The resulting solution has a higher temperature than the water prior to the addition of sodium. What are the signs of ΔH°and ΔS° for this reaction?a. ΔH° is negative and ΔS° is positive.b. ΔH° is positive and ΔS° is negative. c. ΔH° is negative and ΔS° is negative. d, ΔH° is positive and ΔS° is positive. 

Problem

Sodium reacts violently with water according to the equation: 

2 Na(s) + 2 H2O(l) →2NaOH(aq) + H2(g) 

The resulting solution has a higher temperature than the water prior to the addition of sodium. What are the signs of ΔH°and ΔS° for this reaction?

a. ΔH° is negative and ΔS° is positive.

b. ΔH° is positive and ΔS° is negative. 

c. ΔH° is negative and ΔS° is negative. 

d, ΔH° is positive and ΔS° is positive. 

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