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

Preparation of cyclohexanol from cyclohexene, 1)why hydroboration leads to ...

1)why hydroboration leads to anti-markovnikov addition of hydrogen whereas most electrophilic additions to alkenes result in Markovnikov addition. 2) draw the full mechanism and id

Packing of atoms, how can i make an assignment on this topic?

how can i make an assignment on this topic?

Advantages of icp-aes method, Advantages of ICP-AES method: The wide a...

Advantages of ICP-AES method: The wide applicability of ICP-AES in the quantitative analysis of various materials can be attributed to the following advantages. Rapid a

Photon absorption for ir spectroscopy, Photon absorption for IR spectroscop...

Photon absorption for IR spectroscopy Absorption spectroscopy refers to spectroscopic methods which measure the absorption of radiation, as a function of frequency or waveleng

Poisnous gases released during burning of the plastic , What are the major ...

What are the major poisnous gases released during burning of the plastic substances? Ans) It is high time that we start taking concrete steps in order to prevent pollution or else

Classification of polymers, Classification of polymers Classification l...

Classification of polymers Classification lies on source of availability: They are categorized as (a) Natural polymers   (b) Synthetic polymers

Project, preparation of soyabin milk

preparation of soyabin milk

Zoology, Classify phylum protozoa upto classes giving characters and suitab...

Classify phylum protozoa upto classes giving characters and suitable examples.

Inorganic chemistry, sodium prepration

sodium prepration

Van der waals repulsions, Van der Waals repulsions Because severe van ...

Van der Waals repulsions Because severe van der Waals repulsions occur among the tert-butyl groups in compound A at normal bond lengths and angles, the only way for the molecu

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