Sodium chloride is formed by the following reaction:
NaOH + HCl --> NaCl + H2O
How many grams of water are formed when 10 g of HCl is consumed? Round your answer to one decimal place, do not include units or commas. use the molar masses in your text to two decimal places.
10 grams of HCl is how many moles? Calculate that, then the moles of water will be the same, and convert that to grams.
To find the number of grams of water formed, we need to use stoichiometry and the given molar masses.
First, we need to convert the mass of HCl to moles.
Given:
Mass of HCl = 10 g
The molar mass of HCl is the sum of the molar masses of its components:
Molar mass of HCl = Molar mass of H + Molar mass of Cl
= 1.01 g/mol + 35.45 g/mol
= 36.46 g/mol
Now, we can calculate the number of moles of HCl:
Number of moles of HCl = Mass of HCl / Molar mass of HCl
= 10 g / 36.46 g/mol
≈ 0.274 mol
From the balanced equation: NaOH + HCl --> NaCl + H2O, we can see that the stoichiometric ratio between HCl and H2O is 1:1. That means for every 1 mole of HCl consumed, 1 mole of H2O is formed.
Therefore, the number of moles of H2O formed is also approximately 0.274 mol.
Now, to find the mass of water formed, we need to multiply the number of moles of water by its molar mass.
Given:
Molar mass of H2O = Molar mass of H + Molar mass of O
= 1.01 g/mol + 16.00 g/mol
= 17.01 g/mol
Mass of water formed = Number of moles of H2O * Molar mass of H2O
= 0.274 mol * 17.01 g/mol
≈ 4.66 g
Therefore, approximately 4.66 grams of water are formed when 10 grams of HCl is consumed.