In a chemical reaction, X reacts to produce Y: 3X → 2Y The concentrations of X and Y are measured with time: t/s: 0.00 1.00 2.00 4.00 8.00 16.0 X/M: 1.000 0.705 0.526 0.352 0.264 0.250 Y/M: 0.000 0.197 0.316 0.432 0.491 0.500 The concentration of reactant X varies with time: X = (X0 – XF) e–kt + XF The concentration of product Y varies with time: Y = (YF – Y0) (1 – e–kt) What is the rate constant k for the reaction? Question 18 options: k = 0.33 k = 0.25 k = 0.50 What is amount of Y produced after 3.00 s? Question 19 options: 0.375 M 0.388 M 0.362 M At what time does the concentration of X become 0.5 M? Question 20 options: 2.1 s 2.2 s 2.3 s
In a chemical reaction, X reacts to produce Y: 3X → 2Y The concentrations of X and Y are measured with time: t/s: 0.00 1.00 2.00 4.00 8.00 16.0 X/M: 1.000 0.705 0.526 0.352 0.264 0.250 Y/M: 0.000 0.197 0.316 0.432 0.491 0.500 The concentration of reactant X varies with time: X = (X0 – XF) e–kt + XF The concentration of product Y varies with time: Y = (YF – Y0) (1 – e–kt) What is the rate constant k for the reaction? Question 18 options: k = 0.33 k = 0.25 k = 0.50 What is amount of Y produced after 3.00 s? Question 19 options: 0.375 M 0.388 M 0.362 M At what time does the concentration of X become 0.5 M? Question 20 options: 2.1 s 2.2 s 2.3 s
In a chemical reaction, X reacts to produce Y: 3X → 2Y The concentrations of X and Y are measured with time: t/s: 0.00 1.00 2.00 4.00 8.00 16.0 X/M: 1.000 0.705 0.526 0.352 0.264 0.250 Y/M: 0.000 0.197 0.316 0.432 0.491 0.500 The concentration of reactant X varies with time: X = (X0 – XF) e–kt + XF The concentration of product Y varies with time: Y = (YF – Y0) (1 – e–kt) What is the rate constant k for the reaction? Question 18 options: k = 0.33 k = 0.25 k = 0.50 What is amount of Y produced after 3.00 s? Question 19 options: 0.375 M 0.388 M 0.362 M At what time does the concentration of X become 0.5 M? Question 20 options: 2.1 s 2.2 s 2.3 s
The concentrations of X and Y are measured with time:
t/s: 0.00 1.00 2.00 4.00 8.00 16.0
X/M: 1.000 0.705 0.526 0.352 0.264 0.250
Y/M: 0.000 0.197 0.316 0.432 0.491 0.500
The concentration of reactant X varies with time:
X = (X0 – XF) e–kt + XF
The concentration of product Y varies with time:
Y = (YF – Y0) (1 – e–kt)
What is the rate constant k for the reaction?
Question 18 options:
k = 0.33
k = 0.25
k = 0.50
What is amount of Y produced after 3.00 s?
Question 19 options:
0.375 M
0.388 M
0.362 M
At what time does the concentration of X become 0.5 M?
Question 20 options:
2.1 s
2.2 s
2.3 s
Definition Definition Transformation of a chemical species into another chemical species. A chemical reaction consists of breaking existing bonds and forming new ones by changing the position of electrons. These reactions are best explained using a chemical equation.
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