Question

Match the reaction on the right with the corresponding reaction on the left by writing the correct, matching number in the space provided. solid sodium + chlorine gas → solid sodium chloride solid sodium + liquid water → aqueous sodium hydroxide + hydrogen gas 2H2(g) + O2(g) → 2H2O(g) 2H2O2(aq) → O2(g) + 2H2O(l) 1) aqueous hydrogen peroxide → oxygen gas + liquid water 2) 2Na(s) + Cl2(g) → 2NaCl(s) 3) hydrogen gas + oxygen gas → water gas 4) 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)

Answer 1

Explanation:

The first given equation in words is as follows.

solid sodium + chlorine gas $\rightarrow$ solid sodium chloride

The chemical equation for this reaction will be written as follows.

        $Na(s) + Cl(g) \rightarrow NaCl (s)$

The second given equation in words is as follows.

solid sodium + liquid water $\rightarrow$ aqueous sodium hydroxide + hydrogen gas

The chemical equation for this reaction will be written as follows.

    $Na(s) + H_{2}O(l) \rightarrow NaOH(aq) + H_{2}$

The third given equation is as follows.

    $2H_{2}(g) + O_{2}(g) \rightarrow 2H_{2}O(g)$

This equation can be written in words as follows.

hydrogen gas + oxygen gas $\rightarrow$ water gas

The fourth given equation is as follows.

     $2H_{2}O_{2}(aq) \rightarrow O_{2}(g) + 2H_{2}O(l)$

This equation can be written in words as follows.

aqueous hydrogen peroxide $\rightarrow$ oxygen gas + liquid water

Thus, match the given data as follows.

• solid sodium + chlorine gas $\rightarrow$ solid sodium chloride - (2).  $2Na(s) + Cl_{2}(g) \rightarrow 2NaCl (s)$

• solid sodium + liquid water $\rightarrow$ aqueous sodium hydroxide + hydrogen gas - (4).  $2Na(s) + 2H_{2}O(l) \rightarrow 2NaOH(aq) + H_{2}$

• $2H_{2}(g) + O_{2}(g) \rightarrow 2H_{2}O(g)$ - (3). hydrogen gas + oxygen gas $\rightarrow$ water gas.

• $2H_{2}O_{2}(aq) \rightarrow O_{2}(g) + 2H_{2}O(l)$ - (1). aqueous hydrogen peroxide $\rightarrow$ oxygen gas + liquid water

Answer 2

The reaction on the right with the corresponding reaction on the left would be as follows:

• solid sodium + chlorine gas → solid sodium chloride  

             

             $2Na(s) + Cl_2(g) ---> 2NaCl(s)$

• solid sodium + liquid water → aqueous sodium hydroxide + hydrogen gas

               $2Na(s) + 2H_2O(l) ---> 2NaOH(aq) + H_2(g)$

• aqueous hydrogen peroxide → oxygen gas + liquid water

                  $2H_2O_2(aq) ---> O2(g) + 2H_2O(l)$

• hydrogen gas + oxygen gas ---> water gas

                     $2H_2(g) + O_2(g) ----> 2H_2O(g)$

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