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

Volumetric analzsis, density of gas is 2.86 ltr.the gas may be-

density of gas is 2.86 ltr.the gas may be-

Electrochemistry, Explain construction & working of calomel electrode.

Explain construction & working of calomel electrode.

The number of orbitals present in the shell with n= 4 is, The number of o...

The number of orbitals present in the shell with n= 4   is: (1) 16              (2) 8       (3) 18               (4) 32 Ans: 16

Example of octahedral complexes, Q. Example of octahedral complexes? Le...

Q. Example of octahedral complexes? Let us now turn our attention to the complexes having transition metal ion with d 2 or d 3 electrons. With these configurations, there are

How do temperature affect electrical resistivity of metals, How do impuriti...

How do impurities and temperature affect electrical resistivity of metals? Ans: Temperature effect on resistivity: Any increase in temperature of a conductor increase

Borozole, write a short notes on borozole

write a short notes on borozole

Behaviour of gases, What is kinetic molecular theory

What is kinetic molecular theory

atomic weight, what is the atomic weight of oxyge

what is the atomic weight of oxygen

Electrochemistry, working of calomel electrode

working of calomel electrode

Electrochemistry, what are the value of standard oxidation and standaed red...

what are the value of standard oxidation and standaed reduction potential of water

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