/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q2P State four desirable properties ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 27: Q2P (page 767)

State four desirable properties of a gravimetric precipitate.

Short Answer

Expert verified

The Four desirable properties of gravimetric precipitate

  1. Easy filterability
  2. Insolubility
  3. High purity
  4. Stable and constant composition

Step by step solution

01

Definition

It is an analytical technique that uses a precipitation reaction to separate ions from a solution. The chemical that is added to cause the precipitation is called the precipitant or precipitating agent

02

Desirable properties of gravimetric precipitate

  1. Easy filterability - Particles should be smaller considering the size
  2. Insolubility 鈥� needed in order to get high yield of precipitate
  3. High purity 鈥� less impurities need to be present in sample
  4. Stable and constant composition - necessary in order to obtain accurate weight.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

To find the Ce4+ content of a solid, 4.37 g were dissolved and treated with excess iodate to precipitate Ce(IO3)4. The precipitate was collected, washed well, dried, and ignited to produce 0.104 g of CeO2 (FM 172.114). What was the weight percent of Ce in the original solid?

Finely ground mineral (0.6324g)was dissolved in 25 mLof boiling 4M HCland diluted with 175mLH2Ocontaining two drops of methyl red indicator. The solution was heated to100oC,and50mL of warm solution containing2.0g(NH4)2C2O4 were slowly added to precipitateCaC2O4.Then6MNH3 was added until the indicator changed from red to yellow, showing that the liquid was neutral or slightly basic. After slow cooling for 1 h, the liquid was decanted and the solid transferred to a filter crucible and washed with cold10.1wt%(NH4)2C2O4 solution five times until noCl- was detected in the filtrate upon addition ofAgNO3 solution. The crucible was dried at 1 h and then at105掳C in a furnace for 2 h.

Ca2++C2O42-鈫�105掳CCaC2O4+H2O(s)鈫�500oCCaCO3(s)

FM 40.078 18.5467 g

The mass of the empty crucible was 18.2311 g and the mass of the crucible with CaCO3was 18.5467 g .

(a) Find the wt% Ca in the mineral.

(b) Why is the unknown solution heated to boiling and the precipitant solution, (NH4)2C2O4 also heated before slowly mixing the two?

(c) What is the purpose of washing the precipitate with0.1wt%(NH4)2C2O4?

(d) What is the purpose of testing the filtrate withAgNO3solution?

A 6.234-mg sample produced 12.123 mgCO2and 2.529mg ofH2O.

Find the wt%of C and H in the sample.

Twenty dietary iron tablets with a total mass of 22.131 g

were ground and mixed thoroughly. Then 2.998 g of the powder were dissolved inHNO3and heated to convert all iron intoFe3+Addition ofNH3precipitatedFe2O3脳xH2O, which was ignited to give0.264gofFe2O3(FM159.69).What is the average mass ofFeSO4脳7H2O(FM278.01)in each tablet?

Consider a mixture of the two solids,

BaCl22H2O(FM244.26)andKCI(FM74.551), in an unknown ratio. (The notation BaCl22H2O means that a crystal is formed with two water molecules for each BaCl2) When the unknown is heated to 160掳C for 1h, the water of crystallization is driven off:

BaCl22H2O(s)鈫�160掳BaCI(s)+2H2O(g)

A sample originally weighing 1.7839 g weighed 1.5623 g after heating. Calculate the weight percent Ba,K and Cl ofin the original sample.
See all solutions

Recommended explanations on Chemistry Textbooks

Organic Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Chemical Reactions

Read Explanation

Making Measurements

Read Explanation

Physical Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.