Calculate the mass KHC8H4O4 (molar mass= 204.44 g/mol) that reacts with 15 mL of the NaOH solution. Express this mass KHC8H4O4 to the correct number of significant figures.
Please, help I have no idea how to do this. What will the mass be of KHC8H4O4? Thank you for help!
mols NaOH = M x L = ?
mols KHC8H4O4 = mols NaOH.
grams KHC8H4O4 = mols x molar mass.
To calculate the mass of KHC8H4O4 that reacts with 15 mL of NaOH solution, we need to use the concept of stoichiometry and the balanced chemical equation.
1. Firstly, determine the balanced chemical equation for the reaction between KHC8H4O4 and NaOH:
KHC8H4O4 + NaOH -> KNaC8H4O4 + H2O
2. Next, convert the volume of NaOH solution (15 mL) to moles using its molarity. However, it is not mentioned in the question. Do you have any information about the molarity of the NaOH solution?
To calculate the mass of KHC8H4O4 that reacts with 15 mL of NaOH solution, we need to use the balanced chemical equation and the concentration of the NaOH solution.
First, write the balanced equation for the reaction between KHC8H4O4 and NaOH:
KHC8H4O4 + NaOH -> KNaC8H4O4 + H2O
Next, determine the number of moles of NaOH using its concentration:
Molarity = Moles/Liters
Assuming the concentration of the NaOH solution is provided in units of moles per liter (mol/L), we can calculate the number of moles using the given volume in liters:
15 mL = 0.015 L (since 1 L = 1000 mL)
Now, divide the volume of NaOH by its molar volume to get the moles:
Moles of NaOH = Molarity x Volume (in liters)
Moles of NaOH = (concentration of NaOH (in mol/L)) x 0.015 L
Once you have the number of moles of NaOH, you can determine the moles of KHC8H4O4 using the stoichiometric ratio from the balanced equation.
The stoichiometric ratio between NaOH and KHC8H4O4 is 1:1. This means that for every 1 mole of NaOH, 1 mole of KHC8H4O4 reacts.
Therefore, the moles of KHC8H4O4 will be the same as the moles of NaOH.
Lastly, calculate the mass of KHC8H4O4 using its molar mass and the number of moles of KHC8H4O4:
Mass = Moles x Molar mass
Mass = (moles of KHC8H4O4) x (molar mass of KHC8H4O4)
Make sure to round the mass to the appropriate number of significant figures based on the given values in the question.