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Give reasons why solid NaCl dissolves readily in water?
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- Write a chemical equation for the dissolution of sodium chloride in water.Give the importance of solubility in the practice of pharmacyDescribe the preparation of 500 mL 0.50 M K2Cr2O7 solution using solid K2Cr2O7 (purity: 99.8%). What is the volume of NaOH needed to dilute 1.50 M NaOH to 250 mL of 0.10 M. Calculate the volume of 0.1 M HCl needed to react with 50 mL of 0.89 M NaOH. Consider the reaction of 10 g KClO3 and 5g P4. Identify the limiting reagent Identify the excess reagent How much product is formed? (Calculate per product)
- 1. When potassium dichromate (K2CRO4) is added to a solution containing 0.500 g silver nitrate (AGNO3), solid silver chromate (Ag2CrO4) is formed. ( Note: Be sure to write down the balanced chemical equation.) a) Determine the theoretical yield of the silver chromate precipitate. b) If 0.455 g of silver chromate is obtained, calculate the percentage yield.Describe the process of the solubility of ionic compounds?The substance to be analyzed – is white, highly soluble in water salt. Interaction with concentrated sulfuric acid leads to evolving of reddish-brown gas with pungent odour. Addition of ammonium oxalate leads to formation of white precipitate, which is insoluble in acetic acid. Diphenylamine reaction turns color of the solution to violet. What kind of salt is this? Ca(NO3) 2 NaNO2 KBrO3 MgCl2
- Select all that would be expected to apply to CBr4 covalent compound high solubility in water low solubility in CCl4 non-polar compoundWhich one of the following compounds will NOT be soluble in water? NaOH K2SO4 PbS LiNO3 MgCl25. You have 97.0 mL of a 0.500 M stock solution of HCl that must be diluted to 0.200 M. How much water (in mL) should be added? 6. Express the concentration of a 0.120 M solution of NaF in mass percentage (w/w) and in parts per million (PPM). Assume the density of the solution is 1.00 g/mL. 7. Assuming 100% dissociation, calculate the freezing point and boiling point (in °C) of a solution with 98.4 g of AgNO3 in 1.00 kg of water. 8. Calculate the osmolarity of these solutions. Assume density of the solution is 1.00 g/mL. (a) 3.80 M MgCl2 solution Osmolarity = (b) 4.40% w/w glucose (C6H12O6) solution Osmolarity =
- In a titration lab determining the salt content of potato chips, silver nitrate, potassium chromate, and calcium carbonate were used. Explain the purpose of each chemical.Excess Pb(NO3)2 (aq) is added to 214 mL of a 1.70 mol L-1 solution of NaCl(aq). Assuming complete precipitation, what is the mass of precipitate that forms? Use the course data sheet for any required data. Select the closest answer. 25.3 g 37.4 g 31.4 g 202.3 g 50.6 gWhy some sulfides of Group II cations are soluble in concentrated HCl while others are not