3. Aliquots of an unknown tris sample were titrated with a standard HCl solution: a. Use the balanced equation to set up the string calculation showing how the tris concentration will be calculated. Use mol of acid, L of acid, L mol of base, and L of L base to represent the reactants. Remember the calculation must include a stoichiometric ratio. b. A 20.00 mL aliquot of tris was titrated with 0.1009 M HCI. The sample required 20.67 mL HCl to reach a BCG endpoint. What is the molarity of the tris solution?

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**Problem 3:**

Aliquots of an unknown tris sample were titrated with a standard HCl solution:

a. **Use the balanced equation to set up the string calculation** showing how the tris concentration will be calculated. Use \(\frac{\text{mol}}{L}\) of acid, L of acid, \(\frac{\text{mol}}{L}\) of base, and L of base to represent the reactants. Remember the calculation must include a stoichiometric ratio.

b. A 20.00 mL aliquot of tris was titrated with 0.1009 M HCl. The sample required 20.67 mL HCl to reach a BCG endpoint. What is the molarity of the tris solution?

*(Page 63)*
Transcribed Image Text:**Problem 3:** Aliquots of an unknown tris sample were titrated with a standard HCl solution: a. **Use the balanced equation to set up the string calculation** showing how the tris concentration will be calculated. Use \(\frac{\text{mol}}{L}\) of acid, L of acid, \(\frac{\text{mol}}{L}\) of base, and L of base to represent the reactants. Remember the calculation must include a stoichiometric ratio. b. A 20.00 mL aliquot of tris was titrated with 0.1009 M HCl. The sample required 20.67 mL HCl to reach a BCG endpoint. What is the molarity of the tris solution? *(Page 63)*
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