XHomeMail - Esther CeronSotelo - Outlo X(78) How to Calculate Oxidationb Answered: G formula for ammoni X101 Chem 101XXapp.101edu.coSubmitQuestion 9 of 27Complete the balanced neutralization equation for the reaction below:NH&OH(aq)HPO.(aq)3|2+4-|3+|4+1267890161943(s)(g) (aq)(1)НPResetDeletex H204:30 PMеOTYPE here to search11/14/2019+LO23Z

A balanced chemical equation is an equation which contains same elements in same number on both the…

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Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter26: Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 26.20QAP

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The concentration of Cl– in a 300.0-mL sample of water drawn from a fresh water acquifer suffering from encroachment of sea water, was determined by titrating with 0.0516 M Hg(NO3)2. The sample was acidified and titrated to the diphenylcarbazone end point, requiring 6.18 mL of the titrant. Report the concentration of Cl–in parts per million
A sample of impure NaOH, which has been partially converted to Na2CO3 by exposure to CO2, is analyzed by titrating a 188.5 mg sample with 0.1065 M HCl. The volume required to reach phenolphtalein end point is 39.19 ml while the volume required to reach bromocresol green end point is 40.67 ml. Calculate the percentages of NaOH (MWt= 40 g/mole) and Na2CO3 (MWt=83 g/mole) in the sample.
v. What is pH? Calculate the pH for 0.0001N NH4OH solution of 100mL volume. The pKb value for NH4OH at 25oC is 1.76 x 10-5.
In the standardi zation of HCl using pure anhydrou s sodium carbonate as primarystandard for methy l orange as indica tor , 1.0 mL HCl was found to be equiva lent to 0.05gof sodium carbonate (MW =106). The no rmality of HCl is
1. 1093-g sample of impure Na2CO3 was analyzed by residual precipitimetry. After adding 50.00 mL of 0.06911 M AgNO3, the sample was back-titrated with 0.05781 M KSCN, requiring 27.36 mL to reach the endpoint. The percentage Na2CO3 (MW = 106.0 g/mole) in the tested sample is ________ % ? Note: Express final answer using least number of significant figures. 2. The alkalinity of natural waters is usually controlled by OH- (MW = 17.01 g/mole), CO3-2 (MW = 60.01 g/mole), and HCO3- (MW = 61.01 g/mole), which may be present singularly or in combination. Titrating a 10.0-mL sample to a phenolphthalein endpoint requires 38.12 mL of a 0.5812 M solution of HCl, and an additional 18.67 mL of the same titrant to reach the methyl orange endpoint. The composition of the sample is _________% CO3-2 and ___________ % OH- Note: Express final answers using least number of significant figures.
Wifey?: What is the Ksp for a compound with generic formula A3X2 if the concentration of X3- ions in a solution saturated with the compound in water is 2.80 x 10-2 M. A. 1.18x10-3 B. 1.51x10-11 C. 4.65x10-7 D. 1.16x10-7 E. 5.81x10-8 Zach Childress: What
What is the pH of the solution after mixing 0.188 g of Mg(OH)2 (MW=58.321 g/mol) with 18.1 mL of 0.0173 M HCl? The resulting solution was diluted to 100 mL. Round your calculated value for pH to two figures to the right of the decimal point.
In standardizing a solution of NaOH against 1.431g of KHC8H4O4, the analyst uses 35.50 mL of the alkali and has to run back with 5.12 mL of acid (1mL = 0.0031g Na20) What is the normality of NaOH? Additional instructions: Make it handwritten Include up to 4 decimal places Please include explanations of the process Thank you so much!
Calculate the concentration of free Ca²⁺ in a solution of 0.10 M CaY²⁻ at pH 10.00. (K= 5.0 × 10¹⁰) 2.4 × 10⁻⁶ M5.6 × 10⁻¹² M 5.6 x 10⁻¹¹ M 7.2 × 10⁻¹³ M None of the given.
If an Ecell of 0.495V was noted when your cell was set-up. What is thesolution pH?
for a 0.0342 M aqueous solution of aniline, C6H5NH2 (Kb = 7.4E-10), determine the following. Kw = 1.0E-14. What are the major and minor species present? Include phase.What is the major species (other than water)? HCNOEdit What is the minor species (other than H3O+ and OH-)? (H+ are lost from or gained on the N.) CNO,e−Edit What is the concentration of the minor species present in the solution? M The number of significant digits is set to 2; the tolerance is +/-4% What is the concentration of the major species present in the solution? M The number of significant digits is set to 3; the tolerance is +/-4% What is the concentration of H3O+? M The number of significant digits is set to 2; the tolerance is +/-4% What is the…
The protein content of wheat flour can be determined reasonably accurately by multiplying the percentage of nitrogen present by 5.7. A 2.06-g sample of flour was taken through a Kjeldahl procedure and the ammonia produced was distilled into a boric acid solution. If this solution required 34.70 mL of 0.174 N HCl for titration to the methyl red end point, what is the a) % Nitrogen and b) % protein in the flour? (Use 1:1 stoich ratio between N and HCl)

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