In order to determine soluble sugars in date sample, the sugar should be extracted with a. 80% acetone b. acidified water O c. 80% ether d. 80% ethanol
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Q: What is that color or result of sugar solution when mixed with benedict reagent
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Q: In extraction, usually we saturate the aqueous layer by salt in order to: Select one O a Precipitate…
A: The answer is option c. which is, dry the organic layer(act as a drying agent).
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Q: Name of Test Sample Reagent Result Sodium bisulfate a. Aldehyde b. Acetone
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- Which of the following would keep the relative super saturation at minimum during precipitation? 1. OElevated temperature. 2. ODilute solutions. 3. OSlow addition of precipitating agent with good stirring 4. O All of the above.Q2: Fill the blanks with suitable answers 1: The . is the thing being dissolved. 2: The branches of quantitative analysis are and 3. The filterability of the precipitate depend on the ... of practices.An unhnown brown liquid is unitorm throughout and con be futher Seperated by distillation The unhnown is... a.) element 6.) solution C.) a Lomponnd d.) heteropenous mixture not yet? ngest IMF #3.
- Give clear detailed Solution..please avoid handwritten SolutionFertilizer sample 1.150 g containing SO4 -2 ion is dissolved in 500ml dist. Water. 100ml of the solution was precipitated with BaCl2 solution as BaSO4 weighing 0.436 g. % mass of SO42- = ?d. All of these. 9. Concentration of the stock solution is 0.30m. Howmuch of it would have to be diluted to the totAl of 10:00ml to get the conc of O. 0005m? a) n ml b) 17 microL c)17 mol
- Only typed explanation otherwise leave it What weight of pyrite containing 36.40% S must be obtained for analysis in order to give a precipitate of BaSO4 weighing 1.0206 g? A. 0.38 g B. 0.26 g C. 0.14 g D. 0.10 gA 0.4482 g sample of impure NaCN is titrated with 0.1018 M AgNO3 requiring 39.68 mL to reach the end point. Report the purity of the sample as %w/w NaCN. a. 61.13% b. 63.13% c. 62.31% d. 66.25%Which is a wrong statement? a. Washing the precipitate, removes absorbed impurities O b. In homogeneous precipitation the precipitating agent is added from within the solution O. Precipitation starts by neucleation in a supersaturated solution O d. Occlusion and inclusion impurities can be removed by recrystallization
- Read and urete on the selection of a proper Indicator • What is an Indicator Chemistry Of work ? )u Factors which result in Indicator f an acıd/base Indicator (how does it Colour Chawge of an Indicator Cuhat is ?) range ranges of different lndicators Indicator which Indicafors reaction may be used for which Indicator • General rule for Cho.ce of an . Itow to determine range at which an Indicator whe of wHl Change colourWhich characteristic of a precipitate doesn’t do well for gravimetric analysis. a Readily filtered and washed free of contaminants b Of sufficiently high solubility (Ksp) c Unreactive with constituents of the atmosphere and high purity d Of known composition after it is dried or, if necessary, ignited. e None of the above.t to tuasd ssem uL () the The moralify of the souhm The mnany of the sonunon हुर्गज् strongest Type f the IMf fornd in this soution to ·a t o tusad Ssem of mg coH)2 in 300.0g %801.da, at punot seu woynios (alculate. て of water. The oensiy of the finoal ha unthos
