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1. Lactic acid, HC3H5O3, is the acid, which forms when milk sours. As its formula indicates, this acid has an acid hydrogen ion. It requires 22.4 mL of NaOH at 0.156 M to neutralize the acid in a sample of 25.0 mL of lactic acid. Calculate the mass of lactic acid contained in the sample.
2. Vinegar is a dilute solution of acetic acid. What is the concentration of acetic acid in the vinegar if 26.5 mL of NaOH at 0.250 M are required to neutralize 10.0 mL of vinegar?
3. ASA tablets contain the analgesic acetylsalicylic acid, HC9H7O4, which has an acid hydrogen ion. During titration of a tablet of 0.250 g of ASA, 38.5 mL of KOH at 0.0223 M were required to reach end point. What was the percentage by mass of the acetylsalicylic acid in the tablet?
Question- If 65.0 mL of water (instead of 50.00mL) were used to dissolve the potassium hydrogen phthalate, would the calculated molarity of the NaOH solution be less, greater, or remain the same?
hcl hbr and hi are strong acids yet hf is a weak acid. what does that mean in terms of the extent to which these
How much A would have been extracted into ether if the orginal aqueous solution had been extracted once with a 500-mL portion of ether? What percentage of A would have been extracted by the ether?
A student titrated 10.00 mL HCL with standard NaOH in a 125 mL flask. The amount of NaOH needed was 24.50 mL. Calculate the molarity of the HCl solution if the concentration of the standarized NaOH is 0.09430 M. (The blank titration needed 0.10 mL..
In terms of the Bohr theory of the hydrogen atom, what process is occurring when excited hydrogen atoms emit radiant energy of certain wavelengths and only those wavelengths?
What fraction of the total residues are branch points? B) How many reducing ends does this amylopectin have?
if a sample containing 3.00 ml of nitroglycerine density 1.592 gml is detonated how many total moles of gas are
Draw the product that is formed when the compound shown below is treated with an excess of hydrogen gas and a platinum catalyst.
What is the molarity of a permanganate solution if it takes 10.0 mL of 0.200M iron(II) solution to completely react with 15.7 mL of the permanganate solution
because of the slightly solubility 0.59mgl. of ba3po42 all of the ba2- and po43- do not precipitate from solution.a.
The nitrogen-nitrogen bond lengths in N2H4, N2F2, and N2 are 1.45, 1.25, and 1.10 A, respectively. Using the Lewis Structures, how can this trend be explained? No formal charges needed?
How much water is needed? a.)10mL HCl; 10mL water b.)5mL HCl; 5mL water c.)20mL HCl; 10mL water d.)5mL HCl; 10mL water
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