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3 years ago

14

Create a one-sentence summary that explains why hydrogen gas does react easily and spontaneously

1 answer:

katrin [286]3 years ago

7 0

Answer: Hydrogen belongs to group 1 metal elements in the periodic table.

Explanation:

The hydrogen is a highly active metal. It has a single electron in its valence shell and it can donate its electron to other metal atoms. Thus forming metal hydrides. The hydrogen when ignited it reacts with oxygen and burns explosively this is indicative of high reactivity and spontaneous reactivity of hydrogen atom.

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tia_tia [17]

Explanation:

$H_2O(l)\rightleftharpoons H^+(aq)+OH^-(aq)$

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b.

At a certain temperature, the pH of a neutral solution is 7.56.

Neutral solution means that concentration of hydrogen ion and hydroxide ions are equal.

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$7.56=-\log[H^+]$

$[H^+]=2.754\times 10^{-8} M$

The value of $K_w$ at at this temperature:

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$K_w=[H^+][H^+]$

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The value of $K_w$ at at this temperature is $7.6\times 10^{-16}$ .

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