Why is it important to thoroughly rinse your pH meter with distilled water before testing a different solution?     Because the manual says to do so.     To ensure that the solutions do not contaminate each other     To use up all the supplies you paid good money for.     To neutralize acid or base on the pH meter

Q: 1 A student dilutes a 0.25 M HCI solution to obtain a 0.025M solution. The student then measures the…

A: Concentration of the diluted HCl solution = 0.025 M Measured pH of the diluted HCl solution = 1.75…

Q: A chemist has a solution that has a pH of 3. She adds a chemical to it, and shortly afterwards the…

A: Initial pH of the solution is 3 Final pH of the solution is 5 To determine the concentration of the…

Q: A mixture is made using 50.00mL of 0.20mol L-1 NaOH(aq) and 50.00mL of distilled water. What is the…

A: Interpretation - To determine the pH of the solution in which a mixture is made using 50.00mL of…

Q: First Slide: Title of Slide should be testing acids and bases. A chart should follow. The first…

A: pH is the measure of acidity or basicity. Various method used to determine pH of the substance.  1.…

Q: 1. Does the addition of water (baking soda +water) alter the pH of weak acids/bases? How does it…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A chemist dissolves 770. mg of pure nitric acid in enough water to make up 380. mL of solution.…

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Q: Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.40. You…

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Q: A student forgot to label two bottles of acid. One contained HCl and the other HClO. What test could…

A: the answer is B) simply measure and compare the pH of the two and A) measure the pH before and after…

Q: When answering this problem, report the answer with the appropriate number of significant figures.…

A: When a solution is diluted by adding water, concentration changes.

Q: A chemist dissolves 642. mg of pure hydrobromic acid in enough water to make up 150. mL of solution.…

A: Given :-  Mass of HBr = 642 mg  Volume of solution = 150 mL  To calculate :-  pH of solution

Q: A chemist dissolves 724.mg of pure potassium hydroxide in enough water to make up 170.mL of…

A: potassium hydroxide will release hydroxide ions in the solution.

Q: Which of the given items cannot be used to measure pH? a)pH paper b)Indicator c)filter paper…

A: If pH > 7 (Basic) pH < 7(Acidic) pH = 7 (Neutral) pH paper is used to measure the pH . There…

Q: You make a solution by dissolving 0.0010 mol of HCl in enough water to make 1.0 L of…

A: The molarity of a solution is defined as the number moles of solute per liter of solution. In the…

Q: Is 10mL the original vinegar solution to calculate acidic acid concentration in the original vinegar…

A: An easy breakdown of the procedure being followed according to the description is as follows,25 mL…

Q: A chemist dissolves 705. mg of pure perchloric acid in enough water to make up 160. mL of solution.…

A: Given information, Mass of pure perchloric acid = 705. mg = 0.705 g  As ( 1g = 1000 mg ) Volume of…

Q: 4 mL of a 0.02 M HNO3 solution is diluted to 1,500 mL with distilled water. What is the pH of the…

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Q: If 5 grams of acetic acid 5 grams of sodium acetate are dissolved to produce a liter of solution,…

A: Buffer are solution which can resist change in the pH of solution on slight addition of acid or base

Q: Which of the following may be used to measure the pH of a solution?   a. a pH meter   b.…

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Q: Determine the pH of an HF solution of each of the following concentrations. In which cases can you…

A: We need to calculate pH of HF. 1) 0.240 M 2) 0.0530 M 3) 0.0300 M

Q: Calculate the theoretical ph of each solution a. 0.200M sodium bicarbonate (carbonic scid: pka1=…

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Q: When answering this problem, report the answer with the appropriate number of significant figures…

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Q: 1.) how to prepare a solution using a volumetric flask? 2.) how to measure the ph of a solution…

A: Take a clean and dry volumetric flask (100ml / 250ml / 1 litre) . Measure the solute that you want…

Q: Butyric acid, C3H,COOH, has ionization constant of 1.54 x 10. a) Calculate the pH of 50.0 mL of a…

A: We have to predict the pH of acid and salt and pH upon mixing the solution.

Q: Calculate the pH of a formic acid solution that contains 1.42% formic acid by mass. (Assume a…

A: Molarity of formic acid, C = moles of solutevolume of solution = 1.42 x 1.01 x 100046 x 100 = 0.312…

Q: Solve for the pH for the following solutions when 3 drops of 1.0 M HCl is added Solution 1: 30…

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Q: The diagrams represent aqueous solutions of three acids (HX, HY, and HZ) with water molecules…

A: An acid that is capable of donating a maximum protons H+ in aqueous solution .Strong acids  has…

Q: Determine the OH- and H+ concentration and calculate the pH, pOH of a solution that is 0.70 M NH3…

A: pH of a solution is a measure of acidity of a solution. pH less than 7 indicate that solution is…

Q: How do I calculate the theoretical pH for these?   Mass of Sample, g Volume H20, mL Concentration…

A: The above psroblem is based on hydrolysis of salt.

Q: 0.50 gg of sodium hydroxide (NaOHNaOH) pellets are dissolved in water to make 5.0 LL of solution.…

A: Given Mass of NaOH= 0.5 g Volume of solution = 5.0 L Moalr mass of NaOH = 40 g/mol

Q: A chemist dissolves  125.mg  of pure perchloric acid in enough water to make up  160.mL  of…

A: pH is the negative logarithm of H+ ion concentration of the solution. pH=-log10[H+]

Q: Sodium hypochlorite solution is also known as bleach. It contains the hypochlorite ion ClO-.  (a)…

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Q: A student uses a pH meter in the lab to test a solution and determines that the resulting pH is…

A: pH of a solution is defined as negative logarithm of hydronium ion concentration.    pH = -log[H3O+]…

Q: Are food items such as juice or vinegar acidic or basic? What ion probably accounts for this…

A: Explained as follows

Q: 2. Based on your classification, predict the approximate pH of a solution containing the substance.…

A: HF is a  acid.

Q: An engineer wants to determine whether a certain pH meter is working correctly.  She uses the meter…

A: Given: A pH meter is used to measure pH of 14 neutral samples. Readings are as follows:7.01, 7.04,…

Q: Consider the following data on some weak acids and weak bases: acid name acetic acid hypochlorous…

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Q: Consider the following data on some weak acids and weak bases: name acid hydrocyanic acid…

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Q: Can you distinguish between a strong acid and weak acid (strong base and weak base) by using only…

A: Yes it is possible to distinguish between strong acid and weak acid or strong base and weak base by…

Q: 794.mg  of pure hydrobromic acid in enough water to make up  380.mL  of solution. Calculate the pH

A:

Q: Consider the following data on some weak acids and weak bases: name acid acetic acid hydrocyanic…

A: Here we have to determine the increasing order pH of the following salt solution.  pH of salt…

Q: A liter of solution contains 0.25 M HCOOH and 0.3 M HCOONA, calculate the pH of this solution.…

A: First we would Calculate pH of buffer solution using Henderson Hasselbalch equation.  When HCl is…

Q: a) Calculate [H3O ], [C2H3O2 ] and [HC2H3O2] for a solution prepared by mixing 35.0 mL of 0.10 M…

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Q: Consider the following data on some weak acids and weak bases: name acetic acid hydrocyanic acid 0.1…

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Q: A chemist dissolves 255. mg of pure hydrochloric acid in enough water to make up 370. mL of…

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Q: Consider the following data on some weak acids and weak bases: name hypochlorous acid hydrofluoric…

A: Given,  Ka of HClO = 3.0 x 10-8  Ka of HF = 6.8 x 10-4  Kb of CH3NH2 = 4.4 x 10-4  Kb of C2H5NH2 =…

Q: Hydroiodic acid often is used to disinfect and sanitize medical tools and products. In an…

A: To predict pH without calculation we will observe the concentration of the HI acid before and after…

Q: hat is the pH of a 0.080 M aqueous solution of methylamine, CH3NH2? The Kb for methylamine is…

A: Given : We have to calculate the pH.

Q: A chemist dissolves 248. mg of pure hydrochloric acid in enough water to make up 340. mL of…

A: Mass of HCl = 248 mg = (248 / 1000) g = 0.248 g Volume of solution = 340 mL = ( 340 / 1000 ) L =…