For a reaction at equilibrium, which of the following changes CANNOT increase the rates of the forward and reverse reactions?

an increase in the concentration of the reactants

an increase in the surface area of the products

A decrease in the temperature of the system

A decrease in the activation energy of the forward reaction

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.

The identities of substances are the same before and after which type of change