What is mercuric nitrate method?

What is mercuric nitrate method?

PREPARATION. 0.02 N Mercuric Nitrate Solution: For chloride determination. Dissolve 3.3 g of reagent grade mercuric nitrate (Hg(NO3)2) in about 100 mL of purified water containing 0.25 mL of concentrated nitric acid (70% HNO3, sp g 1.42). Dilute to 1 L with purified water, and mix.

What is the method used in determination of chloride content of water?

As tap water, surface water or mineral water contain chloride ions at low concentration levels, chloride determination should be performed by titration with silver nitrate (AgNO3) as titrant. Standard NF ISO 9297 is based on the Mohr method.

Which indicator can be used during mercuric nitrate titration?

Mercuric Nitrate solutions can be standardized with a standard Chloride solution, using Diphenylcarbazone (DPC) as an indicator. A pH indicator, such as Bromophenol Blue or Xylene Cyanol FF, can be added to the Diphenylcarbazone Indicator to show if the pH is in the proper range for the titration.

What is Mercurimetric titration?

A mercurimetric titration method for determining chlorine in biological fluids has been suggested by Schales and Schales. The method is somewhat more delicate, but gives results comparable in accuracy to titrating with standard silver nitrate using potas- sium dichromate as an indicator.

What is mercuric nitrate used for?

Mercuric nitrate is used in mercuration reactions. In particular, it is used in reactions involving ketones. One of the chemicals which it is most effective with is acetone.

What happens when mercuric nitrate is strongly heated?

When solid mercury (II) nitrate is heated, it decomposes to form solid mercury (II) oxide, gaseous nitrogen dioxide, and oxygen.

What is significance of determination of chloride content in water?

The measured chloride ions can be used to know salinity of different water sources. For brackish water (or sea water or industrial brine solution), it is an important parameter and indicates the extent of desalting of apparatus required.

Why is chloride test done in water?

Chloride increases the electrical conductivity of water and thus increases its corrosivity. In metal pipes, chloride reacts with metal ions to form soluble salts (8), thus increasing levels of metals in drinking-water.

What’s the formula for mercury II nitrate?

Hg(NO3)2
Mercury(II) nitrate/Formula

Which titrant is used in Mercurimetric titration?

Anna M Michałowska Kaczmarczyk1 and Tadeusz Michałowski* 2 The mercurimetric titration of chloride with sodium nitroprusside used as indicator, is formulated. A systematic error involved, with location of the end point of titration is calculated at different concentrations of components in the system tested.

What is Argentometric titration?

Definition: The process of determining the quantity of a sample by adding measured increments of a titrant until the end-point, at which essentially all of the sample has reacted, is reached.

Which is better silver nitrate or mercuric nitrate?

While the Mercuric Nitrate titrimetric method for determining Chloride is the official or approved method in some States, the use of the less toxic and environmentally less harmful Silver Nitrate is a more popular method of Chloride determination, whenever the lower detection limit of the Mercuric Nitrate method is not required.

What kind of DPC is used for mercuric nitrate?

Mercuric Nitrate solutions can be standardized with a standard Chloride solution, using Diphenylcarbazone (DPC) as an indicator. A pH indicator, such as Bromophenol Blue or Xylene Cyanol FF, can be added to the Diphenylcarbazone Indicator to show if the pH is in the proper range for the titration.

When to use diphenylcarbazone or mercuric nitrate?

Mercuric Nitrate reacts with Chloride ions to form soluble, mostly undissociated Mercuric Chloride, and is commonly used in the determination of Chloride. Diphenylcarbazone (DPC) is used as the indicator: