3 years ago

What is the oxidation half-reaction for Fe(s) + 2HCl(aq) to FeCl2(aq) + H2(g)?

Chemistry

1 answer:

Leni [432]3 years ago

3 0

<span>Fe(s)->Fe2+2e- is the answer</span>

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The rate of decay of a chemical involved in a reaction that is second order (bimolecular) in one reactant A is given by: = k [AJ

anyanavicka [17]

Explanation:

$2A\rightarrow products$

According to mass action,

$\textrm{rate}=-\dfrac{\Delta[\textrm A]}{2\Delta t}=k[\textrm A]^2$

Where, k is the rate constant

So,

$\dfrac{d[A]}{dt}=-k[A]^2$

Integrating and applying limits,

$\int_{[A_t]}^{[A_0]}\frac{d[A]}{[A]^2}=-\int_{0}^{t}kdt$

we get:

$\dfrac{1}{[A]} = \dfrac{1}{[A]_0}+kt$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Half life is the time when the concentration reduced to half.

So, $[A_t]=\frac{1}{2}\times [A_0]$

Applying in the equation as:

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4 years ago

How are atoms of the same element with different mass numbers called?

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Answer:

Isotopes

Explanation:

Isotopes are the same element with different masses because of the different number of neutrons. Also, the element doesn't change. If we change the protons, the element will change and then it won't be an isotope. Hope it helps!

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3 years ago

What does the VSEPR theory describe?

sweet-ann [11.9K]

Answer: it is C, why molecules have different shapes.

Explanation:

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3 years ago

PLEASE HELP!!!!!

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A. I think I’m that’s what it is

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What is shown by the structural formula of a molecule?

valentinak56 [21]

Structural formula of a molecule shows:

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