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Chemistry
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Describe how a metal conducts electricity

In order for something to conduct electricity, there must be charged particles within the substance and these charged particles must be free to move.Metals consist of positive ions in a sea of delocalised...

AC
5178 Views

Why does the reactivity of group 7 elements decrease down the periodic table?

As you go down the group, the outer electrons are further from the nucleus, this leads to a reduced attraction between the negative outer electrons and positive nucleus. Also, as there are more electrons,...

DC
Answered by Dhiren C. Chemistry tutor
11324 Views

Why does Benzene require a catalyst to react with Bromine whereas Phenol does not?

The -OH is an activating group, it donates its lone pair into the delocalised ring of electrons. This increases the electron density in the ring, making it more reactive.

FL
Answered by Frankie L. Chemistry tutor
1989 Views

A student runs an experiment to decompose hydrogen peroxide to produce oxygen and water. Increasing the temperature of hydrogen peroxide increases the rate of reaction. Explain why.

When the hydrogen peroxide is heated, the particles have more energy so move faster. This means that they will collide more often, increasing the likelihood of successful collisions. More successful colli...

YA
7640 Views

Calculate the pH of 0.1M Benzoic Acid (C6H5COOH). Ka = 6.3x10-5 M

Ka = [H+][B-]/[HB]Benzoic acid dissociates to C6H6COO- and H+ - this is a 1:1 ratio so the concentrations are equal hence [H+][B-] = [H

MB
Answered by Michael B. Chemistry tutor
21659 Views

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