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

Law, law of crystallography

law of crystallography

Organic chemistry, tests for the presence of iodoform

tests for the presence of iodoform

Calculate Wavelength, Ask question #Minimum 100 words acceWhen an electron ...

Ask question #Minimum 100 words acceWhen an electron beam strikes a block of copper, x-rays of frequency 1.07 x 10 19 Hz are emitted. What is the wavelength of these x-rays?pted#

What is entropy?, Q. What is Entropy? Ans. The strangest thing about...

Q. What is Entropy? Ans. The strangest thing about entropy is that it is denoted by the letter S. Entropy is the measure of the disorder in a system. A system with low en

Mono hydric alcohol, reaction of mono hydric alcohol

reaction of mono hydric alcohol

Electron, Ask quThe maximum number of electrons which each sub-shell can oc...

Ask quThe maximum number of electrons which each sub-shell can occupy is 2(2l+1)

Indicate the nature of bonding, Indicate the nature of bonding in CCl 4   a...

Indicate the nature of bonding in CCl 4   and  CaH 2 : (1) Covalent in Ccl 4    and electrovalent in  Cah 2 (2) Electrovalent in both CCl  and CaH 2 (3) Covalent in bot

What is chlorophyll, Q. What is chlorophyll? A magnesium complex of por...

Q. What is chlorophyll? A magnesium complex of porphyrin is called chlotophyll. the green colouring material in plants and which is essential  for photosynthesis. Hemoglobin

Place light rays from largest to smallest wavelength, Q. Place these types ...

Q. Place these types of light in order from largest to smallest wavelength. Blue light, x-rays, gamma rays, microwaves, green light? Largest wavelength microwaves green l

Standard solutions and titrations, How are standard solutions and titration...

How are standard solutions and titrations prepared in industry?

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