Solved When the spectra used in this lab were obtained, your - Chegg Question: When the spectra used in this lab were obtained, your colleague had the followng chemicals and equipment: 300 MHz NMR NMR tubes Test tubes DI water Disposable pipets Solvents: CHCl3, C6D12, and CDCl3 CRC Handbook (reference) Part 1: Is there a solvent listed above that is inappropriate for NMR? Explain
Solved Chloroform, CHCl3, is formed by the | Chegg. com Science Chemistry Chemistry questions and answers Chloroform, CHCl3, is formed by the following reaction: CH4 (g) + 3 Cl2 (g) → 3 HCl (g) + CHCl3 (g) Determine the enthalpy change for this reaction (ΔH°rxn), using the following: enthalpy of formation of CHCl3 (g), ΔH°f = – 103 1 kJ mol CH4 (g) + 2 O2 (g) → 2 H2O (l) + CO2 (g) ΔH°rxn
Solved The value of ΔH° for the reaction below is -336 kJ . . . - Chegg Science Chemistry Chemistry questions and answers The value of ΔH° for the reaction below is -336 kJ Calculate the heat (kJ) released to the surroundings when 23 0 g of HCl is formed CH4 (g) + 3Cl2 (g) ¬ CHCl3 (l) + 3HCl (g) A) 211 B) 177 C) 70 7 D) -336 E) 2 57 x 103
Caffeine (C8H10N4O2) is a stimulant found in coffee and tea. A solution . . . Caffeine (C 8 H 10 N 4 O 2) is a stimulant found in coffee and tea A solution of caffeine in the solvent chloroform (CHCl 3) has a concentration of 0 0490 m a Calculate the percentage of caffeine by mass in the solution b Calculate the mole fraction of caffeine in the solution
Solved Consider the following reaction: | Chegg. com Consider the following reaction: CHCl3 (g)+Cl2 (g)→CCl4 (g)+HCl (g) The initial rate of the reaction is measured at several different concentrations of the reactants with the following results:
The following three-step mechanism has been proposed for the reaction . . . The following three-step mechanism has been proposed for the reaction of chlorine and chloroform (1) Cl2 (g)<---->2Cl (g) (2) Cl (g)+CHCl3 (g)---->HCl (g)+CCl3 (g) (3) CCl3 (g)+Cl (g)--->CCl4 (g) The numerical values of the rate constants for these steps are k1=4 8* 103; k-1=3 6* 103; k2=1 3* 10-2; k3=2 7* 102 respectively 1) Multiple choice Question a)overall=k2 [CHCl3]k1k-1 [Cl2 (g)]1 2 b