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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 collisio...
YA
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Chlorine reacts with potassium bromide to form potassium chloride and bromine. In this reaction chlorine forms chloride ions: Cl2 + 2KBr --> 2KCl + Br2. Explain, using the equation, how you know that chlorine has been reduced.

It is reduced because it gains an electron in the reaction and reduction is the gain of electrons, therefore the chlorine has been reduced.
CB
Answered by Charles B. • Chemistry tutor
70531 Views

what on earth is a mole, and why is it used in balancing equations

Well... chemistry is the study of very tiny particles (electrons, atoms, molecules). It would be very hard for us to work with, and make calculations with, a single particle. A 'mole' is just 6.022x10^23 of ...
JC
Answered by Jonjo C. • Chemistry tutor
2147 Views

Why do group 1 metals become more reactive as you descend the group?

The outer electron is further from the nucleus of the atom, therefore feeling less effective nuclear attraction . As you descend the group 1 metals, more shells of electrons are present in the metal atom, th...
JS
Answered by Jacob S. • Chemistry tutor
3170 Views

What is the general formula of alkanes

CnH2n+2
BS
Answered by Becky S. • Chemistry tutor
3552 Views