User Account

All Pages

titration help, Chemistry

Assignment Help:
During a titration with EDTA, using eriochrome black T as indicator to determine Ca
2+
, an
analyst obtained the following volumes of EDTA in three different trials: 5.01, 4.93 and 4.98
mL. What is the Ca
2+
concentration (mol/L) in this sample if the concentration of the EDTA
standard used was 0.035 mol/L, and the volume of sample titrated was 20.00 mL?
2) Considering the same type of experiment described in the previous question, calculate the
Ca
2+
concentration in a sample which consumes 20.05, 19.96 and 20.03 mL of a 0.0084 mol/L
EDTA solution in three different trials. In this case, the sample volume used was 15.00 mL.
3) What is the CaCO3 mass percentage in a seashell sample presenting 0.0158 g of this
compound for an initial sample mass of 0.0165 g?
Do not forget to report the correct number of significant figures. You may also want to use
the following equation in exercises 1 and 2: n = M x V, where n is the number of mols, M is
the molarity in mol/L, and V is the volume in L.

Related Discussions:- titration help

Hyperconjugation, Ask quapplicatipon of hyperconjugation question comes fro...

Ask quapplicatipon of hyperconjugation question comes from neetestion #Minimum 100 words accepted#

P bock of elements, how many blocks of elements are there /define p block e...

how many blocks of elements are there /define p block elements

12 class experiment, preparation of idoform in laboratery

preparation of idoform in laboratery

ORGANIC CHEMISTRY, HOW WE NAMING THE BOND LINE NOTATION

HOW WE NAMING THE BOND LINE NOTATION

Show diffrent type of ligands, Q. Show diffrent type of Ligands? Ligand...

Q. Show diffrent type of Ligands? Ligands which contain one donor atom are called monodentate the donor atom may contain One or  more than one lone pairs of electrons. The l

Metallurgy, pprocessof j ``

pprocessof j ``

Complexometric titrations - types of titrations, Complexometric Titrations ...

Complexometric Titrations - Types of titrations A titration, where an dissolved complex is formed at the equivalence point, is termed as complexometric titration. These types

Solutions (class 12), complete discription of van''t hoff factor

complete discription of van''t hoff factor

Classification of polymers - on the basis of structure, Classification of p...

Classification of polymers - On the basis of structure On the basis of structure of polymers these can be classified as (i) Linear polymers      (ii) Branched chain polym

Classification of polymers - natural polymer, Classification of polymers - ...

Classification of polymers - Natural polymer The polymers acquired from nature (plants and animals) are known as natural polymers. These types of polymers are extremely essenti

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd