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Dissolve 50g of KI in the smallest possible quantity of cold water (50 ml). Add a saturated solution of mercuric chloride (about 22g in 350ml of water will be needed) until an excess is indicated by the formation of a precipitate. Then add 200ml of 5N NaOH and dilute to 1 liter. Let settle, and draw off the clear liquid.
What else can I help you with?
Provide methods for preparing the following compounds by the grignard method?
Preparation of alcohol from alkyl halide: React an alkyl halide with magnesium in dry ether to form a Grignard reagent. Then add the Grignard reagent to a carbonyl compound like formaldehyde to obtain the corresponding alcohol after acidic workup. Preparation of alkane from Grignard reagent: React a Grignard reagent (prepared from alkyl halide and magnesium) with an alkyl halide to form a new carbon-carbon bond, resulting in the synthesis of a higher alkane.
What is the impurity formed during the preparation of the Grignard reagent if phenyl bromide was used instead of bromobenzene?
If phenyl bromide is used instead of bromobenzene in the preparation of a Grignard reagent, the impurity formed is phenylmagnesium bromide (PhMgBr). This impurity can be problematic because it reacts differently than the desired Grignard reagent and can lead to undesired side reactions. This impurity can be removed through careful purification techniques before further use in reactions.
How do you prepare ehrlich reagent?
Ehrlich reagent can be prepared by dissolving 0.1 g of p-dimethylaminobenzaldehyde in 5 ml of concentrated hydrochloric acid and then diluting with 95 ml of ethanol. The solution should be 0.1% in p-dimethylaminobenzaldehyde.
Preparation of C5H11OH with grignard reagent?
To prepare C5H11OH using a Grignard reagent, you would typically start with an alkyl halide such as 1-bromopentane (C5H11Br) and react it with magnesium to form the Grignard reagent, in this case, a pentylmagnesium bromide. You would then add this Grignard reagent to a carbonyl compound like formaldehyde (HCHO) or acetone (CH3COCH3) to form the desired alcohol product through nucleophilic addition. Work under anhydrous conditions and ensure proper workup including quenching the reaction with a suitable reagent.
What determine the effect of a limiting reagent on the mass of a product?
the amount of limiting reagent
How do you prepare nesslers reagent?
To prepare Nessler's reagent, dissolve 7g of mercuric iodide and 35g of potassium iodide in distilled water, and then add 100g of potassium hydroxide pellets. Once the solution is clear, dilute it with water to make 1 liter of Nessler's reagent. This reagent is commonly used for detecting ammonia in solutions.
What is the equation for the preparation of ketones from secondary alcohols?
You can only make any ketone from any secondary alcohol by using PCC, Jones reagent, or NaCr2O4 in acid as a reagent.
Provide methods for preparing the following compounds by the grignard method?
Preparation of alcohol from alkyl halide: React an alkyl halide with magnesium in dry ether to form a Grignard reagent. Then add the Grignard reagent to a carbonyl compound like formaldehyde to obtain the corresponding alcohol after acidic workup. Preparation of alkane from Grignard reagent: React a Grignard reagent (prepared from alkyl halide and magnesium) with an alkyl halide to form a new carbon-carbon bond, resulting in the synthesis of a higher alkane.
What has the author D Rochford written?
D. Rochford has written: 'The preparation and use of Harvey's reduced strychnine reagent in oceanographical chemistry'
What is the impurity formed during the preparation of the Grignard reagent if phenyl bromide was used instead of bromobenzene?
If phenyl bromide is used instead of bromobenzene in the preparation of a Grignard reagent, the impurity formed is phenylmagnesium bromide (PhMgBr). This impurity can be problematic because it reacts differently than the desired Grignard reagent and can lead to undesired side reactions. This impurity can be removed through careful purification techniques before further use in reactions.
Uses of reagent bottle?
Reagent bottles are commonly used in laboratories to store and dispense chemicals, solvents, and reagents. They help to ensure the safe handling and storage of these substances, as well as enable accurate measurements during experiments. Reagent bottles are also used for the preparation of solutions, mixing of reagents, and as a container for samples.
What is the correct procedure for removing liquid reagent from its container in preparation for its use in an experiment?
tilt & gently shake the bottle until the desired amount of solid is dispensed.
What has the author Joseph Rosin written?
Joseph Rosin has written: 'Reagent chemicals and standards; with methods of testing and assaying them; also the preparation and standardization of volumetric solutions and extensive tables of equivalents' 'Reagent chemicals and standards' -- subject(s): Specifications, Chemical tests and reagents
Why you use concentrated nitric acid in preparation of ammonium ferric sulphate?
Nitric acid being an oxidizing reagent help the oxidation of Fe(II) to Fe(III).
Why methyl-chloride and ethyl-chloride are not used for grignard reagent preparation?
It is not easy to break C-Cl bond as it is strong. Hence alkyl chlorides are not suitable for Grignard reagents.
How do you prepare ehrlich reagent?
Ehrlich reagent can be prepared by dissolving 0.1 g of p-dimethylaminobenzaldehyde in 5 ml of concentrated hydrochloric acid and then diluting with 95 ml of ethanol. The solution should be 0.1% in p-dimethylaminobenzaldehyde.
Preparation of C5H11OH with grignard reagent?
To prepare C5H11OH using a Grignard reagent, you would typically start with an alkyl halide such as 1-bromopentane (C5H11Br) and react it with magnesium to form the Grignard reagent, in this case, a pentylmagnesium bromide. You would then add this Grignard reagent to a carbonyl compound like formaldehyde (HCHO) or acetone (CH3COCH3) to form the desired alcohol product through nucleophilic addition. Work under anhydrous conditions and ensure proper workup including quenching the reaction with a suitable reagent.
