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

Actinides, Complexes of actinides

Complexes of actinides

internal energy as state function , explain heat as internal energy as st...

explain heat as internal energy as state function

WATER TREATMENT, WHY PHOSPHATE CONDITIONING IS WOKABLE AT ALL VALUE OF PRES...

WHY PHOSPHATE CONDITIONING IS WOKABLE AT ALL VALUE OF PRESSURE?

Inorganic chemistry, Why is that Li is the only element in group 1A that re...

Why is that Li is the only element in group 1A that reacts with dinitrogen to a nitride

Mention the soya bean products, Soya bean products Soya bean and its f...

Soya bean products Soya bean and its flours are used in the preparation of a variety of fermented and non-fermented products in Asian countries. However in India, food use of

Methyl Lithium , Methyl Lithium properties and uses

Methyl Lithium properties and uses

Explain thiols, Explain thiols Because of the element effect, both thi...

Explain thiols Because of the element effect, both thiols (the compounds with -SH groups) are more acidic than ethanol (CH 3 CH 2 OH). The compound ClCH 2 CH 2 SH is the more

Homogeneous and heterogeneous mixture, # objective for the lesson plan

# objective for the lesson plan

Nernest equation, how to derive nernest equation

how to derive nernest equation

Magnified atoms, how many times does water need to be magnified to see the ...

how many times does water need to be magnified to see the atoms

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