To solve this problem, you must first balance the chemical equation and then identify the limiting reactant. The balanced reaction is 3Cl2 + 3H2O = 5HCl + HClO3. Next is finding the limiting reactant. To do this, you have to compare each reactant to the same product. 15.2 g of chlorine gas (Cl2), is equal to 0.214 mols of chlorine gas, and the mol to mol ratio of chlorine gas to hydrochloric acid is 3:5. So, for every 3 mols of Cl2 gas, there are 5 mols of HCl. 0.214mols Cl2 times (5/3) gives you 0.357 mols of HCl. Next you have to go through the same process except with water. 8.46g water divided by 18.016g water per mol = 0.470 mols H2O. The mol to mol ration is still 3:5, so 0.470 times (5/3), which gives you 0.783mols HCl. A chemical reaction is limited based on the amount of reactants present, and so the reaction is limited by whichever reactant runs out first. In this case, the limiting reactant is chlorine gas because it produced a smaller amount of HCl, and therefore the “limit” of the reaction. This means that the maximum amount of HCl that can form is 0.357 mols, or 13.016 grams of HCl if the answer is supposed to be given in grams.
You know that an unlabeled water bottle contains at least some water. You measure the freezing point of the unknown substance and find that it freezes at a temperature lower than 0 degrees Celsius at 1 atmosphere pressure, <span>The substance will have a boiling point that is less than 100 degrees Celsius.</span>
Gravity is pulling it toward the earth, as it would have kinetic energy since it is in motion.
The number of Na atoms in the reactants = 2
<h3>Further explanation</h3>
Every chemical reaction involves compounds that can act as reactants or products
The reactants will react to produce products
The reactants are usually written on the left side of the reaction, while the products on the right side of the reaction
Reaction
2 NaCl + H₂SO₄ → 2 HCl + Na₂SO₄
The element with atomic number 11 = Na(Natrium)
The number of atoms of the element that reacts or is produced can be seen from the reaction coefficient and the number of atoms in the compound
Na in NaCl = 1 atom
From equation, cofficient for NaCl = 2, so number of atoms of Na=2 x 1 = 2
