Astudent monitored the reaction rate of a 0.600m sucrose solution, at 25 oc, and determined that the reaction is first order with respect to sucrose. if at 25.0 oc it takes 3.33-hours for the concentration of the 0.600m solution to drop to 0.300m. how many hours are required for the concentration of the sucrose solution to drop to 10.0 % of its initial concentration.

11.06 hours are required

Explanation:

Because the reaction is first order with respect of sucrose, we can use the formula:

ln [A]ₓ = -k*t + ln[A]₀

Where [A]₀ is the initial concentration of sucrose, k is a constant and [A]ₓ is the concentration remaining after a time t.

Putting the data given by the exercise we can calculate k:

Now with k, we can calculate t when [A]ₓ = 0.600 * 10/100 = 0.060 M

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

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