A buffer solution of pH 7.30 will be prepared from a 50.00 mL solution of 0.075 M NaH2PO4 (K=6.3x10-8). How many grams of Na₂HPO4, must be dissolved in the solution to get the desired pH? (molar mass of Na₂HPO4=119.0 g/mol)

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A: Given Mass of PbMoO4 = 0.2922 gram Total yield of sample  = 0.2091 gram We have to calculate the per...

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Q: e. Can we relate the number of valence electrons with the stability of the element?

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Q: An analytical chemist is titrating 71.3 ml of a 1.000M solution of formic acid (H,CO,) with a 0.6600...

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Q: 1. Use the Rule of 13 as well as the isotopic ratio (M, M+1, etc.) to determine a molecular formula ...

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Q: Excess of Cu(s) is added to 2.00M solution of Cr3+(aq). Given that: Cr2+(aq) + Cu+ (aq)  Cu (s) + Cr...

A: Given:  Concentration of Cr+3 = 2.00 M  Kc = 7.20   

Q: net ionic

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Q: num ber of moles of the solute pre

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Q: E. Name the

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Q: 7.000-g sample of a pesticide was decomposed with metallic sodium in alcohol, and the liberated chlo...

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Q: Be sure to answer all parts. Fermentation is a complex chemical process of wine making in which gluc...

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Q: 1. A gas expands against a variable opposing pressure given by p=10/V atm; where V is the volume of ...

A: Given,  P = 10/V  ∆U = 100 cal        = (100x4.184) J        = 418.4 J  V1 = 10 L  V2 = 100 L 

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A: Thermodynamics is branch of chemistry in which we deal with heat of reaction gained or lost to the s...

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Q: 1) What is the purpose of adding sodium potassium tartrate (Fehling's B)? 2) What test is used to di...

A: Here we have to explain the purpose of using sodium potassium tartarate in Fehling solution, differe...

Q: 500 400 300 200 100 50 100 150 200 250 300 350 400 450 Volume (m³) Created by E. Lee for Virtual Vir...

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Q: 17. Consider a system consisting of the following apparatus, in which gas is confined in one flask a...

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Q: The breaking buffer that we use this week contains 10mM Tris, pH 8.0, 150mM NaCl. The elution buffer...

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Q: 100 90 NANO, 80 70 60 CaCl, 50 Pb{NO,)2 40 NaCI 30 KCI 20 KCIO, 10 Ce,(SO 10 20 30 40 50 60 70 80 90...

A: Answer: This graph is showing us the variation of solubility of a compound in water with respect to ...

Q: Fluorine-18 (18.0009373 g/mole) decays into oxygen-18 (17.9991596 g/mole). Calculate energy differen...

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Q: 6

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Q: when using a buret do your results depend on the initial volume in the buret or does the initial vol...

A: The dependency of initial volume of titrant in buret is discussed below

Q: Mg|Mg(NO3)2(aq)||AGNO3(aa) |Ag6)

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Q: 16.85 To which of the following would the addition of an equal volume of 0.60 M NaOH lead to a solut...

A: Given :  Concentration  of NaOH solution = 0.60 M  pH = -log [H+]  So higher is the concentration of...

Q: The solubility of HgF is 1.7 x 107 M at 25 °C. The solubility product constant, Ksp, for HgF is:

A: Given :-  Molar Solubility of HgF = 1.7 × 10-7 M  To calculate :-  Ksp value 

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Q: 1. Calculate the grams of K2SO4 required to make 350.0 mL of a 0.57 M K2SO4 solution. 2. How many L ...

A: Note: As per our company guideline we can answer only three subparts. Kindly repost the question men...

Q: 5) putting the least acidic first. Rank the following compounds in order of increasing acidity, CH3C...

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Q: If 40.1 g of CH;OH (MM = 32.04 g/ mol) are added to a 500.0 mL volumetric flask, and water is added ...

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Q: H2 reacts with ClF. Someone thinks this is the mechanism:                               H2(g)  +  C...

A: Given, The reaction mechanism,       H2(g)  +  ClF(g) → HCl(g)  + HF(g)       HCl(g)  +  ClF(g) →  C...

Q: List two major disadvantages of taking the IR spectrum of a solid by dissolving it in carbon tetrach...

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Q: grams

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Q: D common name for

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Q: 4.Assume that you test an unknown solution and find that it has a pH of 7.2. What type of solution i...

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Q: Will there be a color change if KMnO4 is added to (a) Cyclohexane , (b) Cyclohexene, (c) Toluene ? ...

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Q: Me Ме МeONa/ MeOН /12

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Q: (c) Compound C has a molecular formula of C6H14O. The IR spectrum shows strong absorption bands at 2...

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A: Introduction :  Molarity can be defined as the number of moles of a solute in grams present in 1 lit...

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.