A student performs this experiment but forgets to remove air bubbles from the NaOH buret valve. (a) Would the measured volume of NaOH added in the back-titration be incorrectly high or low? (b) How would this error affect the results of the experiment? Question 2 options:   (a) incorrectly low (b) % CaCO3 incorrectly high   (a) incorrectly high (b) % CaCO3 incorrectly high   (a) incorrectly low (b) % CaCO3 incorrectly low   (a) incorrectly high (b) % CaCO3 incorrectly low

Q: why is it not always necessary to refill the buret after every titration?

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Q: Which of the following is a primary standard for NaOH? A. None of these B. Potassium acid phthalate…

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Q: What signifies the end-point of the titration in this experiment, Standardization of a Sodium…

A: The end point in titration is known as the equivalence point. The end point in a titration between…

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Q: Question 5 61.00 mL titrant tr

A: The balanced equation is  CH3NH2 (aq) + HCl (aq) ------> CH3NH3+ (aq) + Cl– (aq)

Q: Which of the following compunds is a weak acid? a) Phenol b) cyclohexanol c) ethanol d)…

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Q: Imagine that you accidentally used 30 mL of water instead of ~20 mL to wash down your flask in the…

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Q: PRE-LAB QUESTIONS Calculate the volume, in mL, of a 0.50 M NaOH solution that will be required to…

A: The volume (in mL) of 0.50 M NaOH is to be calculated that is required to neutralize the 1.2 g of…

Q: 23. You titrate 5mL of a 0.3M NaOH solution with H2SO4 0.1M. How many mL of titrant do you need to…

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Q: Use the graphs below to answer the following questions. titrant - titrant titrant titrant (A) (B)…

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Q: Compute for the weight of NaCl needed to prepare 250 mL of 0.05 M NaCl solution

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Q: In this experiment, you will use phenolphthalein as an indicator. Why is it important to match the…

A: It is important to overlap equivalence point of titration in the region of indicator pH range.

Q: Why must we standardize the NaOH titrant in order to use it to analyze the unknown acid?

A: In volumetric analysis, some chemicals are frequently used in defined concentrations as reference…

Q: Consider an acid-base titration in which the base is dispenssd from a burette into a flask…

A: For an acid- base reaction , M×V (acid) = M×V (base)where,M = MolarityV = Volume M (acid) = M×VV…

Q: Aside from titrimetric method, name at least two more methods of analysis that can be used for…

A: Alkaloid are naturally occurring, nitrogen containg ,organic bases. For example: morphine , nicotine…

Q: What is the purpose of titration?   What is the purpose of phenolphthalein? Why is phenolphthalein…

A: SOLUTION (1.) :  Titration (also known as titrimetry and volumetric analysis) is a common…

Q: An air bubble of some size was present in the liquid in the buret at the end of the first titration…

A: Considering that you are titrating NaOH with some acid by taking NaOH in burette and acid in the…

Q: An analytical method that is based on determining the volumes of reagent of known strength that is…

A: Volumetric titrations involve measuring the volume of a solution of knownconcentration that is…

Q: How would the results of an experiment change if a basic buffer was utilized instead of an acidic…

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Q: In the procedure below for a weak diprotic acid titation experiment what are the independent,…

A: 1.Independent Variable: The independent variable is the variable that we deliberately change or…

Q: Given that the expected amount of ascorbic acid in Vitamin C tablets should be 1000 mg, using…

A: Given data,Mass of ascorbic acid=1000mg=1 gMolarity of NaOH=0.20MMolar mass of ascorbic…

Q: Determine the relationship between the observed/apparent value (EX) VERSUS that of the true value…

A: To determine relationship between observed/apparent value (EX) vs. ET by writing <, > or = on…

Q: One Erlenmeyer contains 50 mL of 0.1 M Na2CO3 solution, the other Erlenmeyer contains 50 mL of 0.1 M…

A: When Na2CO3 is titrated against HCl, methyl orange is used as the indicator. However, when titrating…

Q: Title: Potentiometric Acid Titration ritulo:Tabla de ph volumen NaOH (ml) [ph Titulación NaOH 20…

A: A potentiometric curve is the plot representing the change in  the pH of solution on addition of a…

Q: Calculate the volume in mL of a 0.50 M NaOH solution that will be required toy titrate 1.2g of…

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Q: ) Calculate mass of the acid required to prepare 100 cm' of 0.1 solution of this acid.(Molar mass of…

A: Solution: a) here we have to prepare 100 mL of 0.1 M  acid solution. given molar mass of acid is…

Q: What is phenolphthalein and why is it required in this experiment?

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Q: If one "overshoots" the phenolphthalein endpoint in the NaOH / KHP titration, will the calculated…

A: If one "overshoots" the phenolphthalein endpoint in the NaOH / KHP titration, will the calculated…

Q: Identify the structure(s) observed at each point (a-c) indicated along the titration curve. Point…

A: We have match the curves to appropriate compound.

Q: How do you find the molar mass of an unknown reagent in a titration setup given the reagent's…

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Q: Consider an acid-base titration in which the base is dispensed from a burette into a flask…

A: The strength of an acid (in a flask) is determined as follows.…

Q: ou let your partner do a trial since you're nice. He/she adds a few mL of NaOH, but you realize that…

A: Given : you forgot to record the initial burette level of NaOH solution.

Q: The pKa of the acid can also be deduced from the titration data. Ka, the acid dissociation constant,…

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Q: Which of the following are TRUE about using a buret? Choose all that apply. Group of answer choices…

A: A burette is a graduated cylinder with a stopcock at one of the ends used to deliver accurate volume…

Q: FAI PART A: STANDARDIZATION OF NaOH SOLUTION Weigh two samples of dry KHP Mass of beaker + KHP, g…

A: Given : mass of KHP ,volume of NaOH  To find:  molarity of NaOH Concept/thought process : first we…