Search & Filtering
Explain why the 2-hydroxy-2-methylbutanoic acid produced in this reaction is not optically active.
(The reaction is the incomplete mechanism in the conversion of Butanone into 2-hydroxy-2-methylbutanoic acid)
Give two reasons why methanol, synthesised from carbon dioxide and hydrogen, may not be a completely carbon-neutral fuel.
The high resolution proton nmr spectrum of propan-1-ol contains four peaks. What is the splitting pattern of the four peaks?
A. 3 2 2 1
B. 3 4 3 1
C. 3 6 3 1
D. 3 6 4 2
Reactions of Alkenes
Solve for one major organic product given the following combination of reactants (substrate+reagents)
Substrate: C7H12
Reagent: H2/Pt
Reactions of Arenes
Solve for one major organic product given the following combination of reactants (substrate+reagents).
Substrate: 4-Isopropylbenzoic acid
Reagents: Br2, FeBr3
What is the pH of a 0.350 M solution of lithium citrate? (Ka Citric Acid = 7.4 x 10-4)
What is the pH of a 1.15 M solution of methanoic acid? Ka = 1.8 x 10-4?
25cm³ of a solution containing 4.4grams/litre sodium hydroxide was required to neutralize 17.8cm²of a propanoic acid . Determine the concentration of the propanoic acid in gram's/litre?
Calculate the percentage purity of CaCO3 when 50g of marble reacts with an excess of HCl to make 15 g of CO2.
Instant hot packs work by crystallizing sodium acetate (NaCH3COO). The molar enthalpy of crystallization for sodium acetate is -56.7 kJ/mol. How many grams of sodium acetate are needed to warm 125.0 ml of water from 21 degrees C to 35.4 degrees C?
