3. A 4.326 g sample containing ethyl mercaptan (C₂H_SH) was treated with 50.00 mL of 0.1287 M 1₂ in a sealed flask. When the reaction is complete, the excess I₂ was back-titrated with 18.05 mL of 0.1424 M Na₂S₂O3. Calculate the percentages of C H SH in the sample. L+2C₂H₂SH →21+ C₂H5SSC₂H5 +2H*

Q: The following analytical procedures were used for the determination of chlorate (ClO3). 10.00 mL of…

A: The volume of chlorate solution A= 10.00 mL = 0.010 L The volume of 0.100 M AgNO3 added =  70.00 mL…

Q: 2.00 g of limestone was dissolved in hydrochloric acid and all the calcium present in the sample was…

A: Given: The mass of limestone is 2.00 g. The weight of the precipitate is 2.43 g. To find: Percentage…

Q: What mass of KOH in grams is required to precipitate all the Fe2+ ions from 15.0 mL of a 0.150 M…

A: The Fe(NO3)2 solution contains Fe2+ and 2NO3- ions. The moles of Fe(NO3)2 are calculated as shown…

Q: In the reaction between KCl(aq) and AgNO3(aq), a precipitate of AgCl(s) will form. What mass (in…

A: Molarity of AgNO3 solution = 0.220 Volume of AgNO3 solution = 27.2*10-3 Molar mass of KCl= 74.55…

Q: It is desired to neutralize a solution X that contains a mixture of potassium chloride and…

A: The solution contains several steps.Explanation:Step 1:Step 2: Step 3: Step 4:

Q: The solubility product of a sparingly soluble salt, XF2, was determined by titration and found to be…

A: Given that: solubility product of XF2 = 2.9×10-10 M volume of  XF2 = 25.00 mL molarity of HCl =…

Q: STANDARDIZATION OF NAOH SOLUTION A 0.4047 g sample of primary standard grade potassium hydrogen…

A: Givenmass of potassium phyhalate=0.4047 gmolar mass=204.23 g/molvolume of NaOH=22.42 mL

Q: A 0.5382 g sample containing sodium bicarbonate was dissolved and titrated with standard 0.1263 M…

A: Here acid base neutralization reaction will takes place in which one equivalent of HCl required for…

Q: 100.0 mL of an aqueous solution containing 0.250 M KOH(aq) is mixed with 100.0 mL of an aqueous…

A:

Q: What mass of solid potassium oxalate (K2C2O4), when dissolved in an acidic solution, would be…

A:

Q: What mass of NaOH is needed to precipitate the Cd2+ ions from 33.0 mL of 0.460 M Cd(NO3)2 solution?

A: Volume of solution = 33mLMolarity of solution = 0.460 MMass of NaOH to precipitate Cd = ?

Q: What mass of NaOH is needed to precipitate the Cd2+ ions from 37.0 mL of 0.500 M Cd(NO3)2 solution?

A: Given:Volume of Cd(NO3)2 solution = 37.0 mL = 0.037 L.Molarity of Cd(NO3)2 solution = 0.500 M.

Q: A total of 1.558 F of electricity (1 F = 1 mol e) was required to electrodeposit all of the Zn and…

A: ZnSO4 and CoSO4 both have divalent metal ions as, Zn2+ and Co2+.   (Here M= metal)So, 2F electricity…

Q: A 1.500 g sample of an aluminum is dissolved and the sulfate is precipitated as BaSO4-. The…

A: The question is based on concept of gravimetric analysis. we have been given a hydrated salt. we…

Q: A student weighs out 1.051 g of impure KHP, dissolves the sample in deionized water and titrates it…

A: Given data Mass of impure KHP = 1.051 g Molarity of NaOH  solution = 0.1101 M Volume of NaOH…

Q: Consider the net ionic equation: Cr2O72- + 6Fe2+ + 14H+ = 2Cr3+ + 6Fe3+ + 7H2O. If it takes 26.0 mL…

A: The number of moles is defined as the mass-to-molar mass ratio of a substance. It is represented by…

Q: 185 mL sample of 1.20 M Pb(NO₃)₂ is mixed with 61.5 mL of 1.50 M NaCl, and the PbCl₂ precipitate is…

A: Lead nitrate reacts with sodium chloride to form lead chloride and sodium nitrate. Write the…

Q: Oxalic acid dihydrate (H2C2O4 2H2O) can be used to standardize NaOH solution through acid-base…

A: The acid-base titration involves the reaction of an acid with a base to calculate the concentration…

Q: H2. Titrations are performed by a scientist in the laboratory as follows: a solution of deuterated…

A: A laboratory technique where the concentration of an unknown solution is determined using the volume…

Q: A titration of a 0.7879g sample potassium hydrogen phthalate, KHP (GFW= 204.23g/mole), required…

A:

Q: A 185.0 mL sample of 1.200 M Pb(NO3)2 is mixed with 99.50 mL of 1.500 M NaCl and the PbCl2…

A: Concentration of Pb(NO3)2 = 1.200 MVolume of sample of Pb(NO3)2 = 185 mLConcentration of NaCl =…

Q: a) Sulfuric acid solution is standardized by titrating with 0.678 g of primary standard sodium…

A: Given, mass of Na2CO3 = 0.678 g Volume of H2SO4 solution = 36.8 mL = 0.0368 L Molarity of H2SO4…

Q: A barium mineral was dissolved in HCl to give a solution of BaCl 2. An excess of potassium sulfate…

A: Given: Volume of BaCl2 solution = 75.00 mL = 0.075 L                                (Since 1 L =…

Q: A piece of chalk (mainly calcium carbonate) is placed in 250. mL of 0.364 M HCl. All the CaCO3…

A:

Q: The nitrogen and protein content of a 0.757 g sample of flour sample was analyzed using Kjeldahl…

A:

Q: 2) ) A student who wants to make the determination of calcium, and he dissolved impure 0.1453 g…

A:

Q: Suppose a student needs to standardize a sodium thiosulfate, Na, S,03, solution for a titration…

A: Concentration = 0.024 M

Q: 3. A 4.912-g sample of a petroleum product was burned in a tube furnace, and the SO₂ produced was…

A: Given that,Weight of the sample = 4.912gMolarity of  = 0.00873 MVolume of = 25 mLMolarity of  =…

Q: The amount of protein in a sample of cheese was determined by a Kjeldahl analysis. After digesting a…

A: Given , Mass of sample cheese = 0.9814 g

Q: The amount of protein in a sample of cheese is determined by a Kjeldahl analysis  for nitrogen.…

A: Given data,Molarity of HCl=0.1047MVolume of HCl=50mL=0.050LMolarity of NaOH=0.1183MVolume of…

Q: A titration is performed to determine the amount of sulfuric acid, H2SO4,, in a 6.5mL sample taken…

A:

Q: Oxalic acid dihydrate (H2C2O4 2H2O) can be used to standardize NaOH solution through acid-base…

A: The ratio of moles of solute to the volume of solution in liters in known as molarity.

Q: A standard solution of AgNO3 was prepared by dissolving 7.107 g of pure AgNO3 in sufficient water to…

A:

Q: 105 Chemistry I Laboratory Manual, 2017 Revision Questions: 1) What mass of KHP would you need in…

A: Chemical reaction between sodium hydroxide and KHP is given by:

Q: A 185 mL sample of 1.20 M Pb(NO₃)₂ is mixed with 99.5 mL of 1.50 M NaCl, and the PbCl₂ precipitate…

A: Writing balanced equation for the first precipitationPb(NO3)2  (aq) + 2 NaCl (aq)  →PbCl2 (s) + 2…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".