Why are the acidic and basic extracts cooled before neutralization?

Q: How many grams of  KOHKOH  are needed to neutralize 14.8 mL of 0.18 M  HClHCl  in stomach acid?

A: Given :-  Molar concentration of HCl is 0.18M  Volume of HCl solution = 14.8 mL  To calculate :-…

Q: What is the concentration (M) of an unknown acid solution if it took 16.92 mL of 0.1030 M NaOH to…

A: Since the acid is given monoprotic  hence we can assume it to be HA

Q: Which of the following pairs of compounds can be separated from each other by an extraction…

A: Since we answer upto 3 sub-parts we will answer first 3. Please resubmit the question by mentioning…

Q: A 0.128 g sample of KHP (HKC8H4O4) required 28.54 mL of NaOH solution to reach a phenolphthalein…

A: Solution:- Given data = 0.128 g of KHP (HKC8H404) Volume of NaOH used = 28.54 mL = 0.02854 L Molar…

Q: If KHP used in the Standardization of a Sodium Hydroxide Solution experiment, and was not dried…

A: We know that KHP(Potassium Hydrogen Phthalate) is an excellent primary standard for titration.  KHP…

Q: Please help me with the 1st

A: It is defined as  " at a particular temperature amount of heat energy released (OR) absorbed when…

Q: At 25 degrees celsius, Ka for acid dissociation of aspirin (C9H8O4) is 3.4x10^-4. Calculate delta…

A: Spontaneity of any reaction can be predicted by its standard Gibbs free energy change value ∆G°.…

Q: is propanoic acid less soluble than propanone?

A: Propanoic acid is a fatty acid. It has three carbons. Molecular formula is CH3CH2COOH Propanone is a…

Q: How many millilitres of water must be added to 120 cm3 of 1.50M HCL to give 1.00 M HCL

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Q: How much 0.1M NaOH can be prepared from 300 ml of 5.0M stock solution of NaOH

A: Answer - According to the question - Given values are - M1 = Molarity of NaOH (initial) = 5.0 M M2 =…

Q: The solubility of BaCO3BaCO3 is 22mg/L at 18 °C. What is its Ksp?

A:

Q: A 300 mL of 0.05M ammonia. The density of the solution is 0.88 g/mL. Pka pf ammonium = 9.255. What…

A:

Q: What exactly is vinegar and what effect does it have on the reaction of vinegar and aspirin? What…

A: Vineger is actually acetic acid and the chemical formula for this is CH3COOH

Q: In the 2,4-DNPH test, a yellow precipitate indicates a positive test result. Is this always the case…

A: Given: In the 2,4-DNPH test, a yellow precipitate indicates a positive test result.

Q: Which 0.10 M solution will have the largest concentration of hydroxide ion? a. NaHCO3…

A: b. NH3      (Kb of NH3 = 1.8×10–5)

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 would happen to the pH of your soap if you mixed some vegetable oil with the final product?

A: pH of any substance gives the measure of acidity or basicity of a substance.

Q: When preparing a soap it is always required that the pH be verified, if it comes out too high, how…

A:

Q: 1.00 mL of a 3.55x10^-4 M solution of oleic acid is diluted with 9.00 mL of petroleum ether, forming…

A: Given: Volume of oleic acid= 1.00 mL =0.001 L Molarity of oleic acid= 3.55x10^-4 M V1 of petroleum…

Q: Describe how to prepare 50.0 ml of a 3.00M hydrochloric acid solution using 12.0M HCl.

A: Assuming V mL of 12 M HCl solution is used to make 50 mL of 3.00 M HCl solution. Since moles of HCl…

Q: In a two-vessel technique titration set-up, what is the unknown substance if the volume of…

A: Given  A titration method is given we have to find out the unknown substance .

Q: In a typical laboratory set-up, what conditions are necessary in carrying out acid/base hydrolysis…

A: In typical laboratory set-up we have to be more careful while carrying out acid/base hydrolysis of…

Q: Determine the morality of a NaOH solution when each of the following amounts of acid neutralizes…

A:

Q: Explain the role of phenolphthalein in the standardization of NaOH with KHP

A: Phenolphthalein is an organic compound which is colorless in acidic solution and pink in basic…

Q: What causes heartburn?

A: Heartburn is your chest or throat's painful burning sensation. Heartburn happens when stomach acid…

Q: When we dissolve aspirin in vinegar to extract pure aspirin, what is vinegars role on the chemical…

A: To explain: When we dissolve aspirin in vinegar to extract pure aspirin, what is vinegars role on…

Q: To 20 drops of 10%NaOH, add 20 drops of dilute acetic acid. Add 5 drops of ferric chloride solution.…

A: First NaOH reacts with dilute acetic acid, CH3COOH to form acetate ion. The chemical reaction is:…

Q: What is the normality of 15 mL of an acid if it is neutralized with 125 mL of 1.5 N NaOH.

A:

Q: the questions by writing the correct letter of your answer. Explain your answer briefly in 1 or 2…

A: Given-> (d)-> bleach ,pH 12.5 - 13.5 (e) ->distilled water ,pH =7

Q: Write the reaction involved when ascorbic acid is titrated with: Iodine Dichloro-indophenol solution

A:

Q: Show that HSO3- is an amphiprotic substance using two different, balanced chemical reactions. State…

A: The amphoteric substance is the substance that shows both nature acid as well as the base. The acid…

Q: What do you call an amphiphatic, usually having different polar ends such as a sulfate group

A: A question based on general chemistry that is to be accomplished.

Q: What is the purpose of phenolphthalein in an acid base titration? It marks when the moles of acid…

A: The reaction of acid and base in presence of an indicator in the laboratory is called titration. The…

Q: What effect on a sodium hydroxide concentration solution would happen if a volumetric flask used to…

A: When the volumetric flask is washed with distilled water but not dried, the volume of the of the…

Q: how do you make a .1L .1M buffer at ph=5 using sodium acetate anhydrous and acetic acid. acetic acid…

A: We have to make acetate buffer having volume 0.1 L , molarity 0.1 M and pH = 5 using 17.4 M acetic…

Q: What happens to Sodium Bicarbonate (Na2CO3) when it dissolves in water

A: Sodium bicarbonate is a weak base which is commonly known as baking soda. It is used for cooking…

Q: What is pOH of a solution consisting of 1.05 M NH3 and 0.98 M NH4NO3? Ka of NH4 + is 5.8 x 10-10…

A:

Q: Ethylene glycol (antifreeze) is converted to a(n) __________ in the liver.     inorganic acid…

A: Intake of ethylene glycol is highly risk. Because it is toxic and death may occur after having a…

Q: What is the purpose of the acetate buffer?

A: Acetate buffer is nothing but a mixture of acetic acid and sodium acetate. It is a buffer because it…

Q: Acetic acid buffer system responds to the addition of OH- ions. How would I

A: The reaction which show how Acetic Acid buffer responds to the addition of OH- ions by the equation…

Q: Write an equation showing how the acetic acid buffer system responds to the addition of H3O+ ions.

A: The branch of chemistry that deals with the structure, properties and the reaction of the organic…

Q: Which one of the following is NOT a source of error during a titration? Group of answer choices…

A: Given : Titration analysis.  To find : which does not source of error.  Solution : As we know that,…

Q: The [H₃O⁺] in a 0.050 M solution of Ba(OH)₂ is:    1.0x10⁻⁵   5.0x10⁻²   1.0x10⁻¹³   2.0x10⁻¹³…

A:

Q: What solution can be obtained from the dissolution of Ethylamine Hydrobromide in water? a. acidic…

A: Given-> Dissolution of ethylamine hydrobromide in water. ->The solution of salt is acidic or…

Q: Physical Properties of Urine Properties Observations Color and Odor   pH using universal…

A: Color and odor : Color varies from pale yellow to deep amber. It is a result of urochrome and how…

Q: f the pH of the blood of most animals shifts 0.3 units. above or below. the normal range (7.3-7.5),…

A: A buffer solution is the one which maintains almost constant pH upon addition of small amounts of…

Q: Cocaine is a widely abused, addicting drug. Cocaine is usually obtained as its hydrochloride salt…

A: The compound here has a higher boiling point has to be identified The compound which is more soluble…

Q: What is the principal buffer present in the blood?

A: The buffer solution is defined as the solution that is able to maintain the concentration of…

Q: What is the Concentration of CH3COOH in vinegar (mol/L) (15 ml of vinegar were used in the…

A: Given,  Volume of the vinegar = 15 mL  Concentration of CH3COOH in vinegar (mol/L) = ?