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

Aromatic hydrocarbon, What is aromatic hydrocarbon

What is aromatic hydrocarbon

Citation?, How do I cite information that I get from this website? Specific...

How do I cite information that I get from this website? Specifically, I''d like to know what textbook this comes from: http://www.expertsmind.com/topic/chemistry/solvent-extractio

Freons, Which is a better coolant, Freon 11 or Freon 12? why?

Which is a better coolant, Freon 11 or Freon 12? why?

Quantitative analysis - estimation of elements, Quantitative analysis - Est...

Quantitative analysis - Estimation of Elements After qualitative analysis of elements, the another step in the determination of molecular formula of an organic compound is

The most covalent, Which is the most covalent: (1)  C- O              ...

Which is the most covalent: (1)  C- O                                               (2)  C- Br                    (3)  C- S                              (4)  C-F A

What is resonance effect, Delocalisation of electrons in conjugated system ...

Delocalisation of electrons in conjugated system is called resonance. For example there is delocalisation of electrons in benzene ,hence we write kekule structure for benzen.

Qualitative analysis, why do we add HCl in common ion effect of II froup

why do we add HCl in common ion effect of II froup

Organic chemistry, Fission of Covalent bond

Fission of Covalent bond

Concentration to mass/volu me %, Express the concentration of a 2.0 M NaOH ...

Express the concentration of a 2.0 M NaOH solution as a mass/volume percent. Can you please explain HOW to get the answer?

Ether formation - hydrocarbon, Ether formation - Hydrocarbon Phenol rea...

Ether formation - Hydrocarbon Phenol reacts along with alkyl halides in alkali solution to make phenyl ethers (Williamson's synthesis). The phenoxide atom is a nucleophile and

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