A 0.8250 g of soda ash sample was dissolved in distilled H O and diluted to 250-mL using a volumetric flask.  A 50.00 mL aliquot portion of the dilute soda ash solution needed 4.50 mL of 0.1200 M HCl to reach the phenolphthalein end point and 10.00 mL to reach the methyl orange end point.  From the volumes of HCl needed to reach the phenolphthalein and methyl orange endpoints, how many millimoles of NaHCO are there in the aliquot portion that was titrated?

Q: A 1.576 g primary-standard grade Na2CO3 (MW = 105.99 g/mol) was used to standardize an HCl solution.…

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Q: Consider a 100.0 mL solution initially containing 0.30 mol of pyridine (C5H5N) and 0.50 mol of the…

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Q: A 10.0 mL sample of HF was titrated with 0.500 mol/L NaOH. If it required 5.00 mL of NaOH titrant to…

A: Given; Note: 1000 mL = 1 L  Concentration of NaOH solution = 0.500 mol/L Volume of NaOH solution =…

Q: describe how to prepare 50.00ml of a 3.00M hydrochloric acid solution using 12.0M HCl

A: The dilution factor is given as :

Q: Acetic acid is a weak acid.  Its formula is CH3COOH.  Only the last H is an acid proton.  Vinegar is…

A: Recall the reaction between acetic acid and NaOH        CH3COOH + NaOH → CH3COONa + H2OAccording to…

Q: You are titrating a 1.033 g sample of white vinegar solution (5.0% acetic acid) with a 1.00 M NaOH…

A: The reaction taking place in the titration is  CH3COOH + NaOH ----> CH3COONa + H2O Hence from the…

Q: If you titrate 10.00 mL of vinegar with 0.310 M NaOH and determine that the end point is reached…

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Q: A solution of 11.0% glucose is combined with 30.0 uL of a buffer stock and dH2O. The resulting…

A: The formula of dilution is  c1V1= C2V2  Where , C1and C2 are initial and final concentration  V1and…

Q: How much water must you add to 25 mL of 3.0 M NH3 to dilute it to 0.60M?

A: Since we are just adding water  Hence moles of NH3 in initial solution should be equal to moles of…

Q: Consider the reaction of 75.0 mL of 0.350 M C5H5N (Kb = 1.7 x 10-9) with 100.0 mL of 0.449 M HCI. a)…

A: Since your question has multiple sub parts, we will solve only first three sub parts for you. If you…

Q: How would you make 500 mL of 0.100 M NaOH(aq) solution? How would you standardize this NaOH…

A: Standardizing a solution is the process of determining its concentration by titration against a…

Q: A drop of bromthymol blue and a drop of phenolphthalein are added to a beaker of distilled water.…

A: In solutions having a pH 9 or above, phenolphthalein is pink. In solutions having a pH below 9, the…

Q: You used 80 mL of deionized water instead of the necessary 50 mL of water to make a KHP solution for…

A: The objective of the question is to choose the correct statement regarding the effect on the…

Q: 25. The concentration of 4.0 litres of H2sO4 needed to repare 5.0 litres of 2.0 M solution is? A…

A: Given  V1= 4 litres              V2 = 5 litres               M2= 2 M                Find out M1…

Q: A 100.0 mL100.0 mL sample of natural water was titrated with NaOH.NaOH. The titration required 10.75…

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Q: A 0.5027 g of KHP (KC8H5O4; MW = 204.22 g/mol) required 11.90 mL of NaOH titrant to reach the…

A: Mass of KHP = 0.5027 g  Molar mass of KHP (KC8H5O4 ) = 204.22 g/mol.  Volume of NaOH = 11.90 ml…

Q: 15.00 mL of an ammonia sample (D = 0.980 g/mL) is titrated to endpoint with 31.25 mL of a 0.500M HCI…

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Q: 1. Calculate the volume of 6.0M NaOH needed to make 0.50 L of 0.15M NaOH.

A: formula  used : M1V1 = M2V2 where M1 is the initial molarity, V1 is the initial volume, M2 is the…

Q: How much grams can CaSO4 be dissolved in 250mL of H20 with the KSP of CaSO4 being 2.4 x 10^-5

A: Solubility product is defined as the product of the concentrations or solubilities of the ions each…

Q: 0.54 gram sample of a solid acid is dissolved in a minimal amount of water and titrated to a…

A: It is an acid – base titration. The complete neutralization reaction is given below.

Q: A 25.0-mL aliquot of vinegar was diluted to 250 mL in a volumetric flask. Titration of 50.0-mL…

A: The balanced reaction of acetic acid (vinegar) and sodium hydroxide is: CH3COOH + NaOH → CH3COONa +…

Q: We need 35.0mL of 0.3M H2SO4 solution to completely titrate 22.0mL of NaOH solution of unknown…

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Q: A 10.00 mL sample of vinegar is titrated with 0.187M NaOH and requires 16.33mL of NaOH to reach the…

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Q: A solution of 11.0% glucose is combined with 50.0 µL of a buffer stock and dH2O.  The resulting…

A: The formula of dilution is  C1V1 = C2V2 Where , C1 and C2 are initial and final concentration…

Q: A student prepares a dilute solution of sodium hydroxide, NaOH, starting with 6 M sodium hydroxide.…

A: Mass of KHP = 1.372 g Volume of sodium hydroxide, NaOH = 21.84 ml = 21.84 L1000

Q: 10.00 mL of phosphoric acid (H3PO4) are titrated with 0.2000 M sodium hydroxide. 45.00 mL of the…

A: Phosphoric acid reacts with sodium hydroxide to form sodium phosphate, salt, and water. For the…

Q: What mass of sodium acetate must be added to 435 mL of water to give a solution with pOH = 4.65? Kb…

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Q: A 15.00mL sample of ammonium hydroxide (0.980g/mL) is titrated with 31.25mL of 0.500M HCl. Find the…

A: Balanced equation of ammonium hydroxide and Hydrochloric acid NH4OH  + HCl  →NH4Cl  +H2O Molarity =…

Q: I80 160 140 NaCIO, NaNO, 1. Based on the graph, overall, what happens to the solubility of solid…

A: We would use given curve trends for each substance to answer these questions.