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A water solution have 64% Na2S2O2 together with 1.0% soluble impurity. Upon cooling to 5°C, Na2S2O2·5H2O. crystallizes out. The solubility of this hydrate is 1.35 lb Na2S2O2·5H2O per lb free water (water not bound in the hydrate), The crystals teke away carry as adhering solution 0.06 lb solution/lb crystals. When dried to took away the remaining water (but not the water of hydration), the ?nal dry Na2S2O2·5H2O crystals must not have more than 0.1% impurity. To meet this speci?cation, the original solution, before cooling, is further diluted with water. In order to make 1000 lb's of dry crystal (hydrated), how many pounds of feed are required? (Hint: This problem is best solved using a spreadsheet. Help on the spreadsheet will be available Thursday in recitation - but do not wait until then to attempt the problem!) The spreadsheet will be graded on how well it solves the problem and the quality of presentation of the spreadsheet and the work. (Additional hint, the problem is simpler to solve if you track some "pseudo" components such as "free" water or "hydrated" crystals. Sketch a picture of the process breaking it into small steps. Have the spreadsheet do the calculations for every step for all components, real and "pseudo". By changing the amount of water you add at the start your spreadsheet should display you the results in the ?nal product.)
h2c2o4 + mno-4 - mno-4 +co2
what is meant by abnormal molecular mass ?
I wish to convert beta hydroxy butyrate to either acetoacetate/ acetone or any other forms to be detected using some dyes. Kindly help me.
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how the graph is obtained and why
4-nitrotolouene ---> LiAlH 4 converts it to 4-aminotoluene ----> Add HNO 2 and it forms -----> diazonium salt ------> add H 3 PO 2 to get Toluene -----> add Br 2 /CCl 4 - 2
The electronic configuration of silver atom in ground state is: (1) [ Kr]3 d 10 4 s 1 (2) [Xe]4f 14 5d 10 6s 1 (3) [ Kr]4d 10 5 s
Q. How to Prepare Chlorine in Laboratory? Chlorine is prepared by oxidation of hydrochloric acid with potassium permanganate: 2KMnO 4 + 16HCl -> 2KCl + 2MnCl 2 + 8H 2 O +
The chemical reaction at one time the rate of forward and backward reaction becomes equal that state is known as Equilibrium state.
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