| 1. |
|
| a) |
|
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 Rate = change / time
=36-24/10
12/10
1.2 cm3s-1
|
| b) |
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 |
| 2. |
|
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suitable method, tubes must not be blocked |
| 3. |
|
| a) |
|
|
 |
| b) |
|
|
 |
| 4. |
|
| a) |
|
|
 |
| b) |
|
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119.8-118.25/5 = 1.55/5 = 0.31 g s-1 |
| c) |
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As the reaction proceeds, the reactants are being used up. Consequently, the concentration of reactants decreases. Reducing the concentration of reactants reduces the rate of reaction. |
| d) |
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|
 |
| e) |
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 |
| 5. |
|
| a) |
|
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Prevents loss of mass due to spitting/ bubbling of liquid out of container |
| b) |
|
|
Rate = change/ time
165.00-163.8/10
0.12 g s-1 |
| c) |
|
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|
