Use of chlorine and chlorate (1) Flashcards

1
Q

How does chlorine and water react?

A

Cl2(aq) +H2O= HCl (aq) +HClO (aq)

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2
Q

What kind of reaction is it?

A

Reversible and disproportionate.

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3
Q

What is HClO?

A

An oxidising agent hence toxic

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4
Q

If HClO is toxic why is it used?

A

At low concentrations is it harmless to humans and kills bacteria.

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5
Q

Downsides to chlorination?

A

Toxic at high concentration

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6
Q

In bright sun light how does chlorine react with water?

A

2Cl2(aq) + 2H2O—> 4Cl(aq)+O2(aq)

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7
Q

Why does chlorine need frequent topping up?

A

As HClO are not produced

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8
Q

How does chlorine react with cold dilute NaOH?

A

Cl2 (aq) + 2NaOH(aq) —> NaClO (aq) + NaCl (aq) +H2O(aq)

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9
Q

What is NaClO

A

An oxidising agent

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10
Q

What is NaClO used for?

A

Used as bleach

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