Question

skeletal equation: ( h_2o(l)
ightarrow h_2o(g) )
label the parts of the chemical equation shown below.

this is an example of a reaction.
b. when sodium chloride (nacl) and potassium bromide (kbr) are mixed, a reaction occurs and sodium and
potassium chloride (kcl) are formed.
skeletal equation: ( nacl(aq)+kbr(aq)
ightarrow nabr(aq)+kcl(aq) )
label the parts of the chemical equation shown below.

this is an example of a reaction.
chemical physical reactants products

Explanation:

For the first part:

• Reactants are the substances that start a chemical reaction. In \(H_2O(l)\to H_2O(g)\), \(H_2O(l)\) is the reactant.
• Products are the substances formed in a chemical reaction. Here, \(H_2O(g)\) is the product.
• This is a physical reaction as it involves a change of state (from liquid to gas) without a change in chemical composition.

For the second part:

• Reactants are \(NaCl(aq)\) and \(KBr(aq)\) as they are the starting substances.
• Products are \(NaBr(aq)\) and \(KCl(aq)\) as they are formed in the reaction.
• This is a chemical reaction as there is a rearrangement of ions to form new substances (\(NaBr\) and \(KCl\) from \(NaCl\) and \(KBr\)).

Answer:

For the first equation (\(H_2O(l)\to H_2O(g)\)):

• Left - hand side box (reactants): \(H_2O(l)\)
• Right - hand side box (products): \(H_2O(g)\)
• Reaction type: physical

For the second equation (\(NaCl(aq)+KBr(aq)\to NaBr(aq) + KCl(aq)\)):

• Left - hand side box (reactants): \(NaCl(aq)\) and \(KBr(aq)\)
• Right - hand side box (products): \(NaBr(aq)\) and \(KCl(aq)\)
• Reaction type: chemical