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What is the expected mass of KHP (potassium hydrogen phthalate) required to react completely with 44.32 mL of KOH solution if the molarity of KOH is 0.566 M?
A
5.00 g
B
1.25 g
C
3.75 g
D
2.50 g
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1
First, understand the chemical reaction between KHP (potassium hydrogen phthalate) and KOH. The balanced equation is: . This shows a 1:1 molar ratio between KHP and KOH.
Calculate the moles of KOH using the formula: . Convert the volume from mL to L by dividing by 1000: L.
Substitute the values into the moles formula: . This will give you the moles of KOH, which is equal to the moles of KHP needed due to the 1:1 ratio.
Determine the molar mass of KHP. The chemical formula for KHP is . Calculate the molar mass by adding the atomic masses of each element: K (39.10 g/mol), H (1.01 g/mol), C (12.01 g/mol), O (16.00 g/mol).
Finally, calculate the mass of KHP required using the formula: . Substitute the moles of KHP and the molar mass of KHP into this formula to find the expected mass.