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3 years ago

14

Electrons, protons, and neutrons are three subatomic particles of an atom. if the atom undergoes a change and becomes a positive

ion, which subatomic particle is lost in this process?
a.neutron
b. proton
c. electron

2 answers:

skelet666 [1.2K]3 years ago

8 0

C. electron.........

il63 [147K]3 years ago

3 0

Id be glad to inform you that it is C. Electron

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HI decomposes to H2 and I2 by the following equation: 2HI(g) → H2(g) + I2(g);Kc = 1.6 × 10−3 at 25∘C If 1.0 M HI is placed into

dsp73

<u>Answer:</u> The concentration of hydrogen gas at equilibrium is 0.037 M

<u>Explanation:</u>

We are given:

Initial concentration of HI = 1.0 M

The given chemical equation follows:

$2HI(g)\rightleftharpoons H_2(g)+I_2(g)$

<u>Initial:</u> 1.0

<u>At eqllm:</u> 1.0-2x x x

The expression of $K_c$ for above equation follows:

$K_c=\frac{[H_2][I_2]}{[HI]^2}$

We are given:

$Kc=1.6\times 10^{-3}$

Putting values in above expression, we get:

$1.6\times 10^{-3}=\frac{x\times x}{(1.0-2x)^2}\\\\x=-0.043,0.037$

Neglecting the negative value of 'x' because concentration cannot be negative

So, equilibrium concentration of hydrogen gas = x = 0.037 M

Hence, the concentration of hydrogen gas at equilibrium is 0.037 M

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