For the following reaction, it is found that doubling the amount of A causes the reaction rate to quadruple. Doubling the amount
of B has absolutely no effect on the rate.
What is the best rate law equation for this reaction?
A + B 2C
1 answer:
Answer:
R = k[ A ]²
Explanation:
What we are being asked is to determine the exponents in the equation:
R = k [A ]^a [B]^b
where R = reaction rate of the chemical reaction, k is the reaction constant, [A ][B] are the concentrations, and a and b are exponents.
Now the reaction has b= 0 since changing the concentration of B has no effect on the rate.
So,
R = k [ A ]^a
Doubling the amount of A, quadruples the reaction. Therefore a= 2, and the best law equation is R = k[ A ]²
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If it isn't using energy, it's called diffusion
Answer:
2cm^3
Explanation:
Use the density triangle: D=MxV
Switch for variables, V=M/D
Plug in numbers, 15.8g/7.9g/cm^3=2cm^3
The mass is
71.2 g.
Mass = 89.9 mL ×

= 71.2 g