Question

When hot lava reaches seawater, the salts in the water react with the steam to form gaseous hydrochloride acid. You are given a unbalanced chemical equation for one such reaction and the volume of HCI(g) produced. Explain how you would find the mass of solid sea salt needed to produce the given gas volume.

Answer 1

To find the mass of solid sea salt needed to produce the given gas volume of hydrochloric acid (HCl), we need to use a balanced chemical equation and the molar ratio between the reactants. The volume of HCl(g) can be converted to moles using the ideal gas law, and then the moles of the other reactant can be calculated using the molar ratio. The mass of the solid sea salt can be found by converting the moles to grams using the molar mass.

Step-by-step explanation:

To find the mass of solid sea salt needed to produce the given gas volume of hydrochloric acid (HCl), we need to use the balanced chemical equation. The equation you provided is not directly related to the reaction between hot lava and seawater, so it cannot be used to determine the mass of sea salt. However, we can use the equation HCl(aq) + Mg(OH)2(aq) → H2O(l) + MgCl2(aq) as an example.

In this equation, we can see that 1 mole of HCl reacts with 1 mole of Mg(OH)2 and produces 1 mole of water. From the equation, we can calculate the molar ratio between HCl and Mg(OH)2.

If we know the volume of HCl(g) produced, we can use the ideal gas law to convert it to moles. Then, using the molar ratio, we can calculate the moles of Mg(OH)2 needed. Finally, we can convert the moles of Mg(OH)2 to grams using its molar mass to find the mass of solid sea salt needed.

Answer 2

NaCl + H2O = HCl + NaOH
FIRST write the equation and balance the equation THEN convert the volume of the gas to moles of the gas PV=nRT THEN according to the stoichiometry of the reaction one mol of gas is produced by one mol of salt. Convert the mol of gas to mol of salt FINALLY calculate the molar mass of the salt and convert the mol of salt to g of salt (m= nxMM)