In an experiment, sodium hydroxide solution reacts with hydrochloric acid solution to produce sodium chloride solution and water. Which of the following correctly represents the balanced equation (with physical states) for this experiment?

NaOH (aq) + HCl (l) → NaCl (aq) + (l)

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NaOH (aq) + HCl (aq) → NaCl (aq) + (l)

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NaOH (aq) + HCl (aq) → NaCl (aq) + (aq)

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NaOH (aq) + HCl (l) → NaCl (aq) + (aq)

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Solution

The correct option is B
NaOH (aq) + HCl (aq) → NaCl (aq) + (l)

$N a O H + H C l \to N a C l + H_{2} O$ , the equation is already balanced. The physical states of NaOH, HCl and NaCl are solutions in water, hence written as (aq). $H_{2} O$ is water in liquid state written as (l).

$N a O H (a q) + H C l (a q) \to N a C l (a q) + H_{2} O$ (l)

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In an experiment, sodium hydroxide solution reacts with hydrochloric acid solution to produce sodium chloride solution and water. Which of the following correctly represents the balanced equation (with physical states) for this experiment?

The correct option is B NaOH (aq) + HCl (aq) → NaCl (aq) + (l) NaOH+HCl→NaCl+H2O , the equation is already balanced. The physical states of NaOH, HCl and NaCl are solutions in water, hence written as (aq). H2O is water in liquid state written as (l). NaOH(aq)+HCl(aq)→NaCl(aq)+H2O (l)