Pre Lab Exercise for Titration 1 What is the name for KHP 2

Pre Lab Exercise for Titration: 1. What is the name for KHP? 2. What is the molar mass of KHP? 3. How many moles of KHP are in 0.653 g? 4. What is it called when the indicator changes color? 5. How many mL of water is to be added to the each KHIP Solution? 6. What mass of KHP is to be measured in each Cup \"A\"? 7. In Cup “A\", a student places 0.00294 moles of KHP and it takes 29.38 mL of NaOH solution to reach the end point, what is the molarity of the solution?

Solution

1) KHP is potassium hydrogen phthalate, which is an acidic salt compound.

2) its molar mass is 204.22 g/mol

3) moles of KHP = mass / molar mass = 0.653 g /204.22gmol-1 = 0.0031 mol

6) about 0.600-0.700 g KHP should be measured in cup A.

7) using, molarity = moles / volume of solution in litres

Molarity = 0.00294 mol / 0.029 L

Molarity = 0.101 M