To measure the amount of calcium carbonate CaCO3  in a seashell, an analytical chemist crushes a  2.900g  sample of the shell to a fine powder and titrates it to the endpoint with  162.mL  of  0.310M  hydrogen chloride  HCl  solution.   The balanced chemical equation for the reaction is: 2HClaq + CO2−3aq + H2CO3aq -> 2Cl−aq   Calculate the mass percent of CaCO3 in the sample.

Q: percent NaOH

A:

Q: If 64.0 mL of 0.150 M HCl(aq) is needed to neutralize all the NH3(g) from a 2.25 g sample of organic…

A:

Q: What volume of 0.100 M Na3PO4 is required to precipitate all the lead(II) ions from 400.0 mL of…

A: The question is based on the concept of molarity. molarity is a method of expressing concentration…

Q: An environmental chemist analyzed the effluent (the released waste material) from an industrial…

A: Given :  Volume of sample = 3.52 ml  Volume of NaOH solution = 10.59 ml  Concentration of NaOH…

Q: Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution…

A: Given  Mass of NaOH = 557 gram  Volume of solution = 1 Liter  Molarity = ?

Q: A mixture of hydrochloric and sulfuric acids is prepared so that it contains 0.235 M HCl and 0.605 M…

A: Given:Molarity of  HCl = 0.235 MMolarity of H2SO4 = 0.605 MTotal volume = 273.1 mLMolarity of NaOH =…

Q: A student finds that it takes 46.16 mL of 0.2915 M NaOH to titrate 20.00 mL of sulfuric acid…

A: The reaction between Sulfuric acid (H2SO4) and Sodium hydroxide(NaOH) is given as:H2SO4 + 2 NaOH →…

Q: Determine the molarity of the hydroxide ions (OH') ions in a solution resulting from the mixing of…

A: Balanced Chemical  equation H2SO4 + 2NaOH → Na2SO4 + 2H2O

Q: A titration is performed to determine the amount of sulfuric acid, H2SO4, in a 6.43 mL sample taken…

A:

Q: A mixture contains only sodium chloride and potassium chloride. A 0.1586-g sample of the mixture was…

A:

Q: Calculate the mass (g) of MgCO3 precipitated by mixing 10.00 mL of a 0.200 M Na2CO3 solution with…

A: The chemical reaction between Na2CO3 and Mg(NO3)2 is shown below.

Q: A solution of 250.0 mL of a 0.200 M NaHCO3 solution is to be prepared. The solution is diluted by…

A: In the given problem, the molarity of the serially diluted solution can be calculated by using the…

Q: 20.00-mL portion of the diluted acid is titrated with 0.2025 MNaOH solution. If 42.00 mL of the NaOH…

A: Such kinds of problems are solved by considering the mole concept. The mole concept relates the…

Q: A 5.0mL sample of a stock solution of concentrated HNO3, a strong acid, is diluted with distilled…

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

Q: Vinegar is a solution of acetic acid, HC2H3O2, dissolved in water. A 5.84 g sample of vinegar was…

A: Number of moles and mass of acetic acid can be determined.

Q: Calculate the volume (mL) of 1.0 M potassium carbonate (K2CO3) needed to prepare 5.0 g of the COBALT…

A:

Q: Consider

A: We will calculate mass percent of acetic acid

Q: Calculate and describe how to prepare 100.0 mL of 4.00 M NaCl(aq).

A: To prepare 4.00M NaCl (aq), weight of the NaCl should be measured to dissolve in 100 mL of water.…

Q: react

A: Acid: V =15 ml, M =? Base: V = 55.7 ml and M = 0.1 M

Q: A supply of NAOH is known to contain the contaminants NaCl and MGC12. A 4.955 g sample of this…

A: To calculate the percent concentration of NaOH in the given sample, first of all, we determine the…

Q: How many millilitres of 0.590 mol L−1 H2SO4(aq) are required to completely neutralize 28.1 mL of…

A: The balanced chemical equation for the reaction between sulfuric acid (H2SO4) and potassium…

Q: Complete neutralization of a mixture of magnesium hydroxide and aluminum hydroxide is required 48.5…

A: The given data contains, Volume of HCl = 48.5 ml. Molarity of HCl=0.187 M.

Q: Walter White requires a sulfuric acid (Strong acid) solution to use in a very important synthetic…

A: Here we are required to find the concentration of the unknown sulphuric acid.

Q: Solid potassium cyanide is slowly added to 75.0 mL of a 0.360 M nickel(II) acetate solution until…

A:

Q: ml of a solution

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 350.0 mL solution of 0.150 M HNO3(aq) is mixed with a solution of 230.0 mL of 0.240 M HCl(aq). How…

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 student is titrating a vinegar solution to determine the acetic acid (HC2H3O2) content. They add…

A: We can solve this question using the equation,  M1V1 = M2V2

Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for