Question

some chemical factories use the chloralkali process to make substances from brine, which is a mixture of sodium chloride (nacl) and water (h₂o). in this process, factory workers send currents of electricity through the mixture, causing sodium hydroxide (naoh), chlorine gas (cl₂), and hydrogen gas (h₂) to form. these substances can later be used to create other chemicals like bleach and drain cleaner.

in the chemical reaction described in the passage, which of the following are reactants? select all that apply.

sodium chloride (nacl)

water (h₂o)

hydrogen (h₂)

sodium hydroxide (naoh)

Explanation:

Reactants are the starting substances in a chemical reaction that undergo change to form products. The passage states brine (a mixture of NaCl and H₂O) is used, and electricity causes these to form NaOH, Cl₂, and H₂. So NaCl and H₂O are the reactants, while the others are products.

Answer:

sodium chloride (NaCl)
water (H₂O)