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ChemistryChemistry
9 July, 22:30

Which statement is correct about the reaction that occurs between sodium hydroxide and hydrochloric acid?

It is a single replacement reaction because two new compounds of sodium and chlorine are formed.

It is an acid-base reaction because the sodium hydroxide base reacts with the hydrochloric acid to form a salt and water.

It is a single replacement reaction because sodium replaces hydrogen within a compound as sodium is higher than hydrogen in the activity series.

It is an acid-base reaction because the ions of sodium and hydrogen exchange places in an aqueous solution as hydrogen is higher than sodium in the activity series.

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Answers (2)
  1. 9 July, 22:43
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    Answer

    Hi, the correct answer is,

    B. It is an acid-base reaction because the sodium hydroxide base reacts with the hydrochloric acid to form a salt and water

    Explanation

    When an acid reacts with a base, the products are salt and water. In this case, sodium hydroxide is a base which contains hydroxide ions, OH-, whereas hydrochloric acid is an acid that has Hydrogen ions, H+. When they react, they form sodium chloride, NaCl in aqueous solution as the salt, and additional water molecules. The equation is;

    NaOH (aq) + HCl (aq) → NaCl (aq) + H2O (l)
  2. 9 July, 22:59
    0
    It is an acid-base reaction because the sodium hydroxide base reacts with the hydrochloric acid to form a salt and water.

    Step-by-step explanation:

    The equation for the reaction is

    NaOH + HCl ⟶ NaCl + H₂O

    base + acid ⟶ salt + water

    Thus, Option B is correct.

    Options A and C are wrong, because a single displacement involves an element as one of the reactants. This reaction involves two compounds.

    Option D is wrong. This is an acid base reaction because the hydrogen and hydroxide ions react with each other to form water.
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