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

Basic concepts, what are ion? under what conditions are they produced?

what are ion? under what conditions are they produced?

State differences between primitive cells and unit cells, What are similar...

What are similarities and differences of primitive cells and unit cells?  Ans:  Unit  cell  is  the  basic  building  block  of  a  crystal,  repeated  infinitely  in  three d

Organic chemistry, how to do nomenclature in organic chemistry

how to do nomenclature in organic chemistry

Acid bases and salt, name the acid present in ant sting and give its chemic...

name the acid present in ant sting and give its chemical formula also give common method to get relief from the discomfort caused by ant sting

Nitro compounds, explain why boiling and meliting points of nitroalkanes th...

explain why boiling and meliting points of nitroalkanes than that of iosmeric alkyl nitrites

Who proposed law of mass action, Laws of mass action were proposed by Gulbe...

Laws of mass action were proposed by Gulberg and Waage. The rate of chemical reaction is directly proportional to the product of the active masses of the reactants (molar concentra

The sum of the orbital energies , Why is the total energy of a many-electro...

Why is the total energy of a many-electron atom not equivalent to the sum of the orbital energies for every electron?

Will benzylic halide undergo sn1 or sn2 mechanism?why?, Benzylic halide fol...

Benzylic halide follows sn1 mechanism always...............the order of halides going sn1 rxn is BENZYL>ALLYL>TERTIARY>SECONDARY>PRIMARY>METHYL beacause of stability, benzyl & ally

Polymer, how vulcanisation does changes the chareter of natural rubber

how vulcanisation does changes the chareter of natural rubber

S block element ., discuss the structure of beryllium chloride Becl2.

discuss the structure of beryllium chloride Becl2.

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