Question

After answering these questions, enter your answers in Bb The system has been setup for 2 attempts. If for any reason, the system fails, write your answers on this page, tear out the page from the manual and give this to your TA before prelab lecture starts. You are allowed up to two paper submission per quarter. 1. What is the proper reading of the buret shown? Question 1 answers 20.5 ml 19.44 ml 19.5 ml 19.6 mL 19.50 mL 2. Classify each statement as true or false for the term abbreviated as KHP The formula is HKC8H04. The name is potassium hydrogen phthalate The compound has only one titratable acidic hydrogen The molar mass of the compound is 204.22 g/mol The compound is the same as K2HPO4 3. Read the procedure carefully and then classify each of the following statements as true or false. The acid in a neutralization reaction can be strong or weak If an indicator is not placed in the solution being titrated, no reaction occurs, The buret must be thoroughly cleaned, and rinsed three times with tap water, distilled water and a small amount of the solution. The endpoint of a titration of an unknown acid with a base using phenolphthalein indicator is determined when a faint pink color persists. 4. Calculate the molarity of an HCl solution if a 10.00 mL sample requires 25.24 mL of a 1.600 M NaOH solution to be neutralized.

please help

Answer 1

Q)

A)

1) 19.44 ml is an answer

2) The first statement is false.Because the formula for KHP is an C₈H₅KO₄.

The second sentence is true .The full form for KHP (potassium hydrogen pthalate).

The 3 statment is true. Because the KHP has only one titratable acidic hydrogen that reach with 1 NaOH.

The 4 statement is true . the molar mass of KHP is 204.22g/mol

The 5 statement is false. Because KHP and K₂HPO₄ is not same.

3)All the points given are True.

4)Molarity of HCL

The formula for molarity is M (moles of solute /litres of solution )

=(10.00ml/25.24ml)

=0.39619M