What are the requirements that should be met for a precipitation reaction to serveas the basis of a gravimetric method?

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solutions of manganese(II) sulfate and ammonium carbonate are combined. Do not include states such as (s) or (aq). It is not necessarry for you to indicate which of the products is the precipitate.
For each of the following balanced chemical reactions, identify the type of chemical reaction. If you need to review this concept, select here. Choose... 2 Na(s) + Cl,(g) 2 NaC((s) simple decomposition V simple formation complete combustion 4 PCI(g) + P,(s) + 10 Cl,(g) double replacement 3Cuso,(aq) + 2Fe(s) → Fe,(so,),(aq) + 3Cu single replacement AGNO,(aq) + NaCI(aq) → AgCl(s) + NaNO,(aq) double replacement + 2 C,H2o(g) + 13 02(g) - 8 CO,(g) + 10 H,0(g) complete combustion +
A sample with a mass of 1.340 g was dissolved in water, releasing chlorine ions. The aqueous solution was treated with access AgNO3(aq), the AgCl precipitate collected and weighted. Its mass was 2.709 g. What percentage by mass was the original sample? Make sure to use the correct number of significant figures in your answer.
One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate, Suppose an EPA chemist tests a 200 mL sample of groundwater known to be contaminated with iron(III) chloride, which would react with silver nitrate solution like this: FeCl,(aq) + 3 AgNO,(aq) 3 AgCl(s) + Fe(NO₂),(ag) The chemist adds 21.0 mM silver nitrate solution to the sample until silver chloride stops forming. He then washes, dries, and weighs the precipitate. He finds he has collected 3.3 mg of silver chloride. Calculate the concentration of iron(III) chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits. e -12 D.P C P
If 250. mL of 1.00*10-4 M calcium chloride solution is added to 150. mL of 0.00400 M sodium phosphate solution, what mass of calcium phosphate will precipitate?
1. How would each of the following procedural errors affect the value obtained for the molar volume of hydrogen gas? Explain your reasoning. (a) Some bubbles of hydrogen gas remained clinging to the sides of the tube. (b) Some magnesium metal was left un-reacted at the end of the experiment. (c) 7 mL of the HCl were used instead of 5 mL.
Calculate the volume (mL) of 1.0 M metal nitrate solution required to prepare 5.0 g of the COBALT pigment. Again, using the balanced chemical equation you should be able to relate the moles of pigment to the moles of metal nitrate and from that calculate the volume of 1.0 M metal nitrate solution required. Please report your value as XX.X mL (one decimal point and no units).
Give detailed Solution with explanation needed
Define and give an example of each of the following classes of reactions: precipitation, acid–base, gas evolution, redox (noncombustion), and combustion. Each group member can do one, and then present his or her reaction to the group.
Write the formulas of the reactants and products - including the symbols for the state - (s), (l), (g), (aq) - then balance the equations. Use the WIRIS editor to appropriately represent formulas and symbols.
How much water (in mL) should you add to 50.0 mL of 0.300 M H,SO, (ag) to get a solution of 0.130 M H2SO4 (aq)? Write just the numerical answer with proper sig figs (no units) and do not put it in scientific notation. Make sure to record and submit the full work with units and sig figs in the separate file labeled 4 work.
2. For oxygen to dissolve in water, it needs to be soluble. Solubility is the ability of a substance to dissolve into a liquid. Oxygen can dissolve into water in multiple ways; namely, oxygen can diffuse from the atmosphere and dissolve in the water, and/or it can be introduced into water as a byproduct from the photosynthesis of aquatic plants. Wind helps with the first method, as it aerates the water, which helps the oxygen to dissolve. Since dissolved oxygen is needed by all forms of aquatic life, it is often used as one measure to determine the health of bodies of water. What do you think would happen if there was not enough dissolved oxygen in a lake? There would be no effect on the lake. Fish would not get enough oxygen and could die. The diversity of aquatic organisms would increase.

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What are the requirements that should be met for a precipitation reaction to serve as the basis of a gravimetric method?