Consider the reaction. mc033-1.jpg at equilibrium, the concentrations are as follows. [nocl] = 1.4 ´ 10–2 m [no] = 1.2 ´ 10–3 m [cl2] = 2.2 ´ 10–3 m what is the value of keq for the reaction expressed in scientific notation? 1.6 ´ 10–5 6.2 ´ 10–4 6.2 ´ 104 1.6 ´ 105

Explanation: Equilibrium constant is the ratio of product of concentration of products to the product of concentration of reactants each term raised to their stochiometric coefficients.

Given :

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that tool would be a compass

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.