The equation is not complete.
P4O10 + 2HClO4 + 5H2O ==> 4H3PO4 + Cl2O7
mols HClO4 = grams/molar mass = ?
mols P4O10 = 1/2 mols HClO4
g P4O10 = mols x molar mass = ?
Poat your work if you get stuck.
perchloric acid (HClO4) (aq) + tetraphosphorus decaoxide (s) ---> phosphoric acid (aq) + dichlorine heptaoxide (l)
_____ grams tetraphosphorus decaoxide
P4O10 + 2HClO4 + 5H2O ==> 4H3PO4 + Cl2O7
mols HClO4 = grams/molar mass = ?
mols P4O10 = 1/2 mols HClO4
g P4O10 = mols x molar mass = ?
Poat your work if you get stuck.
First, let's find the molar mass of perchloric acid (HClO4):
HClO4 = (1 * 1.01) + (1 * 35.45) + (4 * 16.00) = 100.46 g/mol
Next, let's find the molar mass of tetraphosphorus decaoxide (P4O10):
P4O10 = (4 * 30.97) + (10 * 16.00) = 283.88 g/mol
Now, we can set up a ratio using the coefficients from the balanced equation and the molar masses of the compounds:
1 mol of HClO4 reacts with 1 mol of P4O10
100.46 g of HClO4 reacts with 283.88 g of P4O10
Using the given information that 26.5 grams of HClO4 are present, we can calculate the grams of P4O10 required:
(26.5 g HClO4) * (283.88 g P4O10 / 100.46 g HClO4) = 74.918 grams of P4O10
Therefore, approximately 74.918 grams of tetraphosphorus decaoxide are required for the complete reaction of 26.5 grams of perchloric acid (HClO4).
Step 1: Write the balanced equation for the reaction:
perchloric acid (HClO4) (aq) + tetraphosphorus decaoxide (P4O10) (s) --> phosphoric acid (H3PO4) (aq) + dichlorine heptaoxide (Cl2O7) (l)
Step 2: Find the molar mass of HClO4 and P4O10:
Molar mass of HClO4 = (1.01 g/mol * 1) + (35.45 g/mol * 1) + (16.00 g/mol * 4) = 100.46 g/mol
Molar mass of P4O10 = (30.97 g/mol * 4) + (16.00 g/mol * 10) = 283.89 g/mol
Step 3: Determine the molar ratio between HClO4 and P4O10:
From the balanced equation, we can see that the stoichiometric ratio of HClO4 to P4O10 is 1:1.
Step 4: Calculate the number of moles of HClO4:
Number of moles = mass / molar mass
Number of moles of HClO4 = 26.5 g / 100.46 g/mol = 0.264 mol
Step 5: Use the molar ratio to determine the number of moles of P4O10:
Since the stoichiometric ratio is 1:1, the number of moles of P4O10 is also 0.264 mol.
Step 6: Convert the number of moles of P4O10 to grams:
Mass = number of moles x molar mass
Mass of P4O10 = 0.264 mol x 283.89 g/mol = 74.74 grams
Therefore, approximately 74.74 grams of tetraphosphorus decaoxide (P4O10) are required for the complete reaction of 26.5 grams of perchloric acid (HClO4).