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Ch.4 - Reactions in Aqueous Solution
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All textbooksBrown 14th EditionCh.4 - Reactions in Aqueous SolutionProblem 9

Chapter 4, Problem 9

What kind of reaction is the 'water-splitting' reaction? H2O(l)¡H2(g) + ½ O2(g) (a) an acid-base reaction (b) a metathesis reaction (c) a redox reaction (d) a precipitation reaction

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Hey everyone, we're asked to determine the type of reaction when caustic soda reacts with vinegar. Looking at our reaction, we can see that we have an acid and a base and this tells us that we have an acid based reaction. And to support our answer, we can see that we produced a water and a salt. Looking at our other options, we know it's not a redox reaction since there is no change in oxidation state. We know it's not a precipitation reaction because we did not produce a solid. And we also know it's not a meta thesis reaction because a meta thesis reaction is one where we have two hydrocarbons that are converted into two new hydrocarbons. So that can't be your answer as well. So our final answer here is going to be an acid based reaction. Now, I hope that made sense. And let us know if you have any questions.
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Related Practice
Textbook Question

The concept of chemical equilibrium is very important. Which one of the following statements is the most correct way to think about equilibrium? (a) If a system is at equilibrium, nothing is happening. (b) If a system is at equilibrium, the rate of the forward reaction is equal to the rate of the back reaction. (c) If a system is at equilibrium, the product concentration is changing over time.

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You are presented with a white solid and told that due to careless labeling it is not clear if the substance is barium chloride, lead chloride, or zinc chloride. When you transfer the solid to a beaker and add water, the solid dissolves to give a clear solution. Next an Na2SO41aq2 solution is added and a white precipitate forms. What is the identity of the unknown white solid?

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An aqueous solution contains 1.2 mM of total ions. (a) If the solution is NaCl(aq), what is the concentration of chloride ion?

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