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

Aliphate hydrocarbon, what is wurtz reaction?

what is wurtz reaction?

Inversion of cane sugar, Inversion of cane-sugar : The hydrolysis of s...

Inversion of cane-sugar : The hydrolysis of sucrose through boiling along with a mineral acid or through enzyme invertase, generates a mixture of equal molecules of D-glucose

BHC, structure and uses

structure and uses

Assignment help, I''ve got a very difficult assignment due in and I need he...

I''ve got a very difficult assignment due in and I need help!

QUANTUM CHEMISTRY, WHAT IS MEANT BY QUANTUM?

WHAT IS MEANT BY QUANTUM?

Intermediate compound formation theory, can anyone explain the intermediate...

can anyone explain the intermediate compound formation theory in detail .?

Organic chemistry, What are the theoretical physical properties of esters?

What are the theoretical physical properties of esters?

Soap, Ask question #Minimum 60 words accepted#

Ask question #Minimum 60 words accepted#

Explain toluene, Explain Toluene Toluene has added stability associate...

Explain Toluene Toluene has added stability associated with aromaticity; compound A, although conjugated, is not aromatic. Because any equilibrium favours the more stable comp

Uses of cellulose - biomolecules, Uses of Cellulose - biomolecules (i) ...

Uses of Cellulose - biomolecules (i) Cellulose is used as such in the manufacture of cloth (cotton), canvas and gunny bags (jute) and paper (wood, bamboo, straw, etc.) (ii)

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