what happens in the electrolysis of sodium chloride?
3 products are seperated hydrogen has +charge goes to -electrode chlorine has -charge goes to +electrode sodium is more reactive than hydrogen, stays in solution.
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ehat is a base?
a solution with a pH above 7
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what is percentage yield?
the percentage of product produced, in omparison to the predicted
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name a use of nano-particles?
their properties depend on the atom they're made from; suncreame- can get into pores deodurant- reduce friction drugs- can easily get into small specific cells catalysts- high surface area to surface area ratio
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name a way of measuring rate of reaction?
mass- how much it decreases time- how long it takes for a substance to react colume- volume of gas given off
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in electrolysis, what is oxidation and reduction?
radiation is the loss of electrons at the negative electrode reduction is the gain of electrons at the positive electrode
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what si an endothermis reaction?
a reaction which takes energy from its surroundings. eg.. thermal decomposion
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what is an exothermis reaction?
a reaction which realeases energy into its surroundings. eg.. burning fuels
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name 4 functions which affect th erat eof reactions?
temerature, surface area of solid, concentration, catalyst
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Card 2
Front
what happens in the electrolysis of sodium chloride?
Back
3 products are seperated hydrogen has +charge goes to -electrode chlorine has -charge goes to +electrode sodium is more reactive than hydrogen, stays in solution.
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