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

Moles, how many grams are there in 1.204 *10^24 atoms of Au?

how many grams are there in 1.204 *10^24 atoms of Au?

Qualitative analysis, why is NH4CL ADDED BEFOR NH4OH

why is NH4CL ADDED BEFOR NH4OH

F block element, why Zn metal regarded other element

why Zn metal regarded other element

What is the organic chemistry?, It is a part of chemistry which deals with ...

It is a part of chemistry which deals with the organic compounds formed by  carbon , hydrogen ,oxygen.

Peculiar behavior of boron, What is the out'' standing features of b...

What is the out'' standing features of boron

Stoichiometry, how to i find the answer to the question ...

how to i find the answer to the question 8.05X10^22 molecules of carbon tetrahydride? and my answer has to be in moles

An ion has 18 electrons in the outermost shell, An ion has 18 electrons in ...

An ion has 18 electrons in the outermost shell, it is: (1)  Cu +                (2) Th 4+                             (3) Cs +                       (4) K + Ans

Sublimation, What is sublimation?

What is sublimation?

.half life determination, complete assignment for half life determination

complete assignment for half life determination

Physical properties of halo arenes, Physical properties of Halo-arenes ...

Physical properties of Halo-arenes (i) Physical state: they are colourless liquid or crystalline solid. (ii) Solubility: Halo-arenes are not soluble with water, but dissolve

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