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

Borazine, define borazine

define borazine

Mechanism of Methanol, What are the different mechanism to produce methanol...

What are the different mechanism to produce methanol(CH3OH)?

Assignment beginning, Is this a excellent beginning for my assignment Most...

Is this a excellent beginning for my assignment Most Australians who own a pool, have saltwater pools, which are basically pools where the water have salt (NaCl) dissolved into th

Gas laws , what is the volume of a gas when the temperature is raised to 25...

what is the volume of a gas when the temperature is raised to 25 degrees celcius fro STP?

Quantitative analysis, explain individual test

explain individual test

Nomenclature of simple aromatic compounds, Nomenclature of simple aromatic ...

Nomenclature of simple aromatic compounds Aromatic compounds are those that consist of one or more benzene rings in them. An aromatic substance has two major types: (1) Nucl

Organic, convert benzene to benzaldehyde

convert benzene to benzaldehyde

Ph metric titration, advantages and dis advantages?

advantages and dis advantages?

What is allotropy, What is Allotropy  If the change in structure is rev...

What is Allotropy  If the change in structure is reversible then the polymorphism is called as 'allotropy'.Allotropy (Gr. allos, other, and tropos, manner) is a behavior exhibi

Microcosmic salt bead test, Microcosmic Salt Bead Test Microcosmic salt...

Microcosmic Salt Bead Test Microcosmic salt, Na(NH 4 )HPO 4 .4H 2 O is as well used to identify specific cations just as borax. While microcosmic salt is burned in a loop of pl

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