What is equivalent weight of potassium permanganate?

What is equivalent weight of potassium permanganate?

potassium permanganate has a molar mass of 158.034(1) g mol−1, and reacts with five moles of electrons per mole of potassium permanganate, so its equivalent weight is 158.034(1) g mol−1/5 eq mol−1 = 31.6068(3) g eq−1.

How do you find the equivalent weight of KMnO4 in acidic medium?

  1. Answer: (4) Equivalent weight can be calculated by using the formula. Equivalent weight = Molar mass/number of electrons lost or gained (n)
  2. In acidic medium: MnO4- + 8H +5e– –> Mn2 + 4H2O. Here n = 5.
  3. In basic medium: MnO4−+ e− → MnO42− Here n = 1.
  4. In neutral medium: Mno4– + 4H+ + 3e− –> MnO2+ 2H2O. Here n = 3.

What is the equivalent mass of KMnO4 when it acts as oxidizing agent in strongly alkaline medium?

Equivalent mass of KMnO4 is equal to one – third of its molecular mass when it acts as an oxidising agent in an alkaline medium.

Does KMnO4 has maximum equivalent weight in acidic medium?

Answer: Equivalent mass of in acidic and alkaline medium is 31.6 and 52.7 respectively.

What is the equivalent weight of K2Cr2O7 in acidic medium?

49g

What happens to K2Cr2O7 in acidic medium?

In acidic medium, K2Cr2O7 exists as Cr2O7^2 – (orange) while in basic medium it is converted to CrO4^2 – (yellow).

What is the equivalent weight of feso4?

So, the molecular weight of ferrous sulphate is 151.8. -Equivalent weight of ferrous sulphate = molecular weight of ferrous sulphate/ involved electron. So, equivalent weight of ferrous sulphate which is present as reductant is 151.8 which is equal to the molecular weight of ferrous sulphate.

What is the equivalent weight of Fecl3?

In Fecl2, Fe has +2 valency whereas in Fecl3,Fe has +3 valency. Iron (atomic weight 55.845) has an equivalent weight of 27.9225 in ferrous compounds (valence 2) and 18.615 in ferric compounds (valence 3).

What is the equivalent weight of CuSO4?

Answer. For ionic salts we take the amount of charge present on an ion (cation or anion) to be the n factor, we have equivalent mass of CuSO4 as 159.609/2 = 79.804 gm/mol.

What is the equivalent weight of caco3?

Appendix 2: Molecular and Equivalent Weights

Name Formula Equivalent Weight
Calcium Ca 20.0
Calcium Bicarbonate Ca(HCO 3) 2 81.0
Calcium Carbonate CaCO 3 50.0
Calcium Hydroxide Ca(OH) 2 37.0

What is the equivalent weight of CaCO3 50?

Answer: 50 The molecular weight of the calcium carbonate is 100.

What is equivalent weight of EDTA?

186.12

Is EDTA acidic or basic?

EDTA is a Weak Acid. EDTA, ethylenediaminetetraacetic acid, has four groups of carboxyls and two groups of amines that can serve as donors of electron pairs, or Lewis bases.

What does EDTA mean?

Ethylenediamine tetraacetic acid

What is EDTA and its function?

A chemical that binds certain metal ions, such as calcium, magnesium, lead, and iron. It is used in medicine to prevent blood samples from clotting and to remove calcium and lead from the body. It is also used to keep bacteria from forming a biofilm (thin layer stuck to a surface).

What’s the role of EDTA?

EDTA is used extensively in the analysis of blood. It is an anticoagulant for blood samples for CBC/FBCs, where the EDTA chelates the calcium present in the blood specimen, arresting the coagulation process and preserving blood cell morphology.

What is EDTA tube used for?

EDTA is the anticoagulant used for most hematology procedures. Its primary use is for the CBC and individual components of the CBC. The larger 6 mL tube is used for blood bank procedures. This tube has no anticoagulant and is used for many chemistry tests, drug levels, and blood bank procedures.

What is the difference between EDTA and heparin?

EDTA and citrate remove calcium, which most coagulation factors need. Heparin activates antithrombin thereby inhibiting coagulation by inhibiting thrombin. Heparin is used for clinical chemistry tests such as cholesterol, CRP, hormones etc. It interferes with PCR, so if you want to do that use EDTA.

What is the meaning of EDTA in blood test?

EDTA stands for Ethylenediaminetetraacetic acid. EDTA functions by binding calcium in the blood and keeping the blood from clotting.

What is EDTA and its formula?

C10H16N2O8

Can EDTA be found in blood?

The Avery tube contained ethylenediamine-tetraacetic acid (EDTA), which prevents blood coagulation and degradation. EDTA is not naturally present in human blood, and the defense argued that if EDTA was found in the crime scene blood, it would prove the blood was planted.

Why is EDTA not a primary standard?

EDTA always complexes metals with 1:1 stoichiometry. Unfortunately EDTA cannot be easily used as a primary standard. The electron pairs of the carboxylic acid groups of EDTA are only available to the metal ion when the acid is dissociated, implying that the effectiveness of the complexing agent is maximized at high pH.

Why do we add buffer solution in EDTA titration?

A buffer solution is used in EDTA titration because it resists the change in pH. This is because all the reactions between the metal ions and EDTA are pH-dependent.

Does EDTA need to be prepared accurately?

Since [Metal ion]+ is unknown, you can make no measurement of the amount present, unless you know [EDTA] fairly accurately. And thus a known mass of primary standard is required to standardize, to calibrate the titration.

Is oxalic acid a primary standard?

Oxalic acid is suitable for use as a primary standard and can then be used to standardise other solutions.