NaCl + H2SO4 → HCl + Na2SO4
If excess sulfuric acid (H2SO4) reacts with 30.0 grams of sodium chloride, how many grams of hydrogen chloride are produced?

Question

Henry Antrim · Accepted Answer

#HCl = 18.7g#

First, we ensure that the equation is balanced. Then, we convert the given grams to moles of reactant. We use that to determine the moles of product from the equation. Finally, we convert those product moles back into grams.

This equation is not balance, but because an excess of acid is given, the only pertinent fact is the ratio of sodium chloride to hydrogen chloride, which remains 1:1. The balanced reaction is:

#2NaCl + H_2SO_4 -> 2HCl + Na_2SO_4#

Moles #NaCl = 30.0/58.5 = 0.513#

#0.513# moles of #HCl = 0.513 xx 36.5 = 18.7g#

HIX Tutor · Answer

undefined To find out how many grams of hydrogen chloride (HCl) are made, we will follow these steps:

1. **Write the balanced equation:**
   $$
   2 \text{NaCl} + \text{H}_2\text{SO}_4 \rightarrow 2 \text{HCl} + \text{Na}_2\text{SO}_4
   $$

2. **Find the molar mass of NaCl:**
   - Sodium (Na) = 23 g/mol
   - Chlorine (Cl) = 35.5 g/mol
   $$
   \text{Molar mass of NaCl} = 23 + 35.5 = 58.5 \text{ g/mol}
   $$

3. **Calculate moles of NaCl:**
   $$
   \text{Moles of NaCl} = \frac{\text{mass}}{\text{molar mass}} = \frac{30.0 \text{ g}}{58.5 \text{ g/mol}} \approx 0.513 \text{ moles}
   $$

4. **Use the balanced equation to find moles of HCl:**
   - The equation shows that 2 moles of NaCl make 2 moles of HCl. 
   - This means 1 mole of NaCl makes 1 mole of HCl.
   - So, moles of HCl = moles of NaCl:
   $$
   \text{Moles of HCl} = 0.513 \text{ moles}
   $$

5. **Find the molar mass of HCl:**
   - Hydrogen (H) = 1 g/mol
   - Chlorine (Cl) = 35.5 g/mol
   $$
   \text{Molar mass of HCl} = 1 + 35.5 = 36.5 \text{ g/mol}
   $$

6. **Calculate grams of HCl produced:**
   $$
   \text{Grams of HCl} = \text{moles} \times \text{molar mass} = 0.513 \text{ moles} \times 36.5 \text{ g/mol} \approx 18.7 \text{ g}
   $$

So, the answer is about **18.7 grams of HCl** are produced.

NaCl + H2SO4 → HCl + Na2SO4 If excess sulfuric acid (H2SO4) reacts with 30.0 grams of sodium chloride, how many grams of hydrogen chloride are produced?