Will acetylene react with sodium hydride according to the following equation to form a salt and hydrogen, H,? Using pK, values given in Table 4.1, calculate K for this equilibrium. HC=CH + Na H- HC=C Na+ + H, Acetylene Sodium Sodium Hydrogen hydride acetylide
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- 1. What type of reaction explains the solubility of phenol in Sodium Hydroxide? Explain the organic product formed 2. How do the reactions of phenol samples with FeCl3 compare? Which structural component of the phenols account for the observation? 3. What compound is the precipitate formed in the Bromine water test? 4. Write the reaction formed in the formation of phenolphthalein. Identify the functional group in phenolphthalein , which is responsible for the indicator property. 5. What is the significance of Millon's test?The reaction of 3-ethylhexanoic acid and PCl3 (or another inorganic chloride source) will produce what compoundA wittig reaction experiment: Week 1 -》 preparation of phosphonium salt Materials : triphenylphosphine (5.3g),methyl Bromoacetate 3.36g (2.1ml) , ethanol 30ml . The yield obtained was 8.93g . Calculate the percentage yield Week 2 -》 Formation of the tlide and wittig reaction Materials :Phosphonium salt (5g), napthyl-2- carboxwaldehyde( 2.65g), 20 ml of water and 5 nl of Nahco3. Yield obtained was 0.51g .Calculate the percentage yield Week 3: Solvent free wittig reaction Materials: Benzyltriphenylphosphonium chloride (0.5g ), 4 - Bromoabenzaldehyde (0.24g), Potassium phosphate (tribasi c) 0.275g .The yield obtained was 1.21g. Calculate the percentage yield
- What would the % yield of ester be if the reaction were simply allowed to equilibrate (i.e. no products are removed)? C3H7OH+C2H5COOH=C6H12O2+H2O Percent yield of ester was 71.6% weight of product= 20.7868g 19.0mL (0.25mol) of n- propanol 18.5 mL (0.25 mol) of propionic acid At room temperature, the equilibrium constant, Keq is approximately 3.a reaction was preformed in which 0.550 mL of p-anisaldehyde was reacted with a slight excess of benzyltriphenylphosphonium chloride to make 0.646 g of p-methyoxystilbene. calculate the theoretical yield and percent yield for this reaction. 388.9 g/mol benyzyltriphenylphosphonium chloride 136.2 g/mol anisaldehyde d= 1.12 g/mL 210.1 g/mol p-methoxystilbeneUsing pKa Values to Predict the Direction of Equilibrium Determine the direction of equilibrium when acetylene (HC≡CH) reacts with −NH2 in a proton transfer reaction.
- For the following pairs, determine what could be the best solvent to differentiate them based on their predicted solubility. 1. beta-naphthol and butyric acid 2. anthracene and benzylamine 3. p-xylene and benzaldehyde1.1) What is the importance and uses of pure cobalt(II) sulphate? 1.2) Name the synthesis methods of cobalt(II) sulphate (CoSO4.7H2O). 1.3) Name the purification methods of cobalt(II) sulphate (CoSO4.7H2O).2.1) Propose synthesis methods for cobalt(II) sulphate (CoSO4.7H2O). 2.2) Propose purification methods for cobalt(II) sulphate (CoSO4.7H2O).1. The substance to be analyzed – is white, highly soluble in water salt. Flame coloration test gives weakly-violet color. Mixing of salt water solution with chlorine water in presence of trichloromethane changes of color of organic layer to raspberry-reddish-violet. What kind of substance is this? Explain you answer, provide chemical equations
- 1. What type of reaction explains solubility of phenol in sodium hydroxide? Explain the organic product formed. 2. How do the reactions of phenol samples with FeCl3 compare? Which structural component of the phenols account for the observationDraw the structure of chloric and chlorous acid and predict their pKa values using Pauling's rules.Write TRUE if the BOLD word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true. If there are two bold words/phrases in a number, write your answer for EACH of the bold words/phrases. 1. Steam distillation results in increased atmospheric pressure. 2. The -CHO group stabilizes the sigma complex formed in electrophilic aromatic substitution. 3. In the aromatic bromination using elemental bromine, using a polarizing solvent will result to a faster decolorization of solution