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

What is rusting electrochemical theory?, According to this theory, the impu...

According to this theory, the impure iron surface behaves like a small electrochemical cell presence of water containing dissolved oxygen or carbon dioxide. Such a cell is also cal

Why the rate of ketone halogenation is independent, Why the rate of ketone ...

Why the rate of ketone halogenation is independent Because the rate of ketone halogenation is independent of the halogen concentration, the rates of halogenation of the same ke

Calculate the weight percents of ethyl alcohol, In the anaerobic fermentati...

In the anaerobic fermentation of grain the yeast Saccharomyces cerevisiae digests glucose from plants to form the products ethanol and propenoic acid by the following overall react

DIENES, PREPARATIONS OF DIENES

PREPARATIONS OF DIENES

Alcoholic acidity, how much percentage alcoholic acidity content in wwheat ...

how much percentage alcoholic acidity content in wwheat flour sample

Periodic trends, what can you deduce about the relationship between ionizat...

what can you deduce about the relationship between ionization energy and reactivity of metals

Rubber, Account for the soft nature of rubber material

Account for the soft nature of rubber material

Robert brown (Brownian motion), timeline about him

timeline about him

ELECTROPHORESIS, PRINCIPLES,GENERAL PROCEDURE,PURO POSES FOR ELECTROPHORESI...

PRINCIPLES,GENERAL PROCEDURE,PURO POSES FOR ELECTROPHORESIS

Sublimation, why wood doesnot sublimine ?

why wood doesnot sublimine ?

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