Organic Chemistry Answers

The reaction with aqueous alkali is often written : Al + NaOH + H₂O → NaAlO₂ + 1.5 H₂

Calculate the amount of Aluminium required to react with 5kg of NaOH

 â€˜Undecane’ is a straight chain alkane containing how many carbon atoms?

CH4

Calculate the mass (in kg) of glucose that can be synthesized by a plant through photosynthesis when 2.49 x 104 kJ of sunlight energy is absorbed by the plant.

at 70\deg c 15.0g of potassium trioxochlorate(v) saturates 50cm cube whole at 25\deg c 10.0g of the salt saturate 40cm cube of the salt is cooled from 70\deg c to 25\deg c calculate the mass of the salt deposited (oxygen=16, chlorine=35.5, potassium=39) 

Draw the structure of phenolphthalein and methyl orange in neutral and their working pH range. Are they water soluble?

Calculate the mass (in grams) of CO2 in a 2.0 L soft drink after the bottle is opened and equilibrates at 25 °C under a CO2 partial pressure of 3.0 x 10-4 atm. The Henry’s law constant for CO2 at this temperature is 3.4 x 10-2 mol/L.atm 

A solution of 0.640 g of epinephrine in 36.0 g of CCl4 elevates the boiling point by 0.490°C. Kb = 5.02 °C m -1 and Kf = 29.8 °C m -1 for CCl4. (a) What is the molality of the solution?

Compound A decomposes to compounds B and C on heating at 500 K according to the chemical equation: 2𝐴 + 𝐵 → 2𝐶 The reaction is first order and the rate constant is 2.17 x 10-5 s -1 . a) Calculate the fraction of A remaining after it has been heated for 30 minutes. b) What is the time (in minutes) required for 50% of the sample to be decomposed under the same conditions?

Convert propane to 2-Iodopropane