Solution.   Vol. of A solution (mL)  [methyl red], M   Absorbance               1                         10.00                    _1.64 x10^-16_           _0.256_      2                        15.00                   _2.45 x10^-16_.          _0.373_      3                        20.00                   _3.27 x10^-16_.          _0.486_      4                        25.00                   _4.09 x10^-16_.          _0.620_   Plot a graph of the absorbance (y axis) as a function of the concentration of methyl red (x axis). What is the slope of the graph?

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A:

Q: Calculate the concentration of acid in each buffer solution. The pKa of acetic acid is 4.745. Sample…

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Q: i: increase or decrease? ii:①0.01/0.02/0.03/0.04/0.05/0.06 ②0.01/0.02/0.03/0.04/0.05/0.06/0.07…

A: i) Increasesii) 1. 0.032. 0.043. 0.01Explanation:

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A: Equation for Ka of HF and Kb of NH3- HF aq ⇔H+aq + F-aqKa =H+F-HFNH3 aq⇔NH4+ aq+OH- aqKb =NH4+OH-NH3

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Q: Define λmax and explain why it is desirable to do the experimental procedure at λmax?

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A:

Q: 1. A 0.3645 sample contains only KCI and BaCl₂. This sample yielded 0.5983g of dried AgCl. Calculate…

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Q: The pl values at both pHs 7.4 and 8.6 are the same. Lab results are routinely generated at pH 8.6.…

A: Isoelectric point

Q: 1 m.e. of Na+ will replace how many m.e. of H+? * a.) 1 b.) 23 c.) 0.23 d.) 0.1

A: n factor of Na+ is 1. n factor of H+ is 1.

Q: 10:11 PM Sun Feb 5 < 5 T B 100% + : 0 DH₂07 2) Na₂Cr₂O₂, H₂SO4, H₂0 7 3). Ph Mg Br 4) +₂0 1 1 < N.

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Q: 10mol% DMAP 2.eq.TEA THF,RT ОН N=C=N + ОН Ph

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Q: Ka for nitrous acid, HNO₂, is 4.00×10-4. Ką for benzoic acid, C6H5COOH, is 6.40×10-5 . Ka for…

A:

Q: Identify the species represented by each curve in the fractional composition diagram of a weak base…

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Q: What is the identity of Cation F?

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Q: OCH 5- OCH, NO,

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A: The correct Kc value is given below

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Q: Calculate the [NH3] in a solution of 0.210 M ammonium fluoride (NH,F). Hint: Use the Ka of HF (6.8 x…

A: We have find out the [NH3] in a solution of 0.210 M ammonium fluoride (NH,F).

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Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.