Rate of reaction practical- Gas collection

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Which substance can easily be measured in this reaction?: MgCO3(s) + 2HCl(aq) → MgCl2(aq) + H2O(l) + CO2(g)? *

1 point

CO2

H20

MgCl2

HCl

MgCO3

Label the following equipment: *

5 points

Conical flask

Reaction mixture

Rubber bung

Gas syringe

Delivery / rubber tube

Put this method in order: *

4 points

Using a measuring cylinder, add 50 cm3 of dilute acid to a conical flask.

Weigh out the required mass of metal carbonate and add it to the flask. Immediately connect the gas syringe and start a stop clock.

Support a gas syringe with a stand, boss and clamp.

Record the volume of gas produced at regular intervals using a stopwatch

What is the equation for calculating overall rate of reaction: ( tick 2) *

2 points

Total volume or mass of product formed / time taken

Time / total volume or mass of reactant used

Total volume or mass of reactant used/ time taken

Time/ total volume or mass of product formed

Required

What are the units for rates of reaction when a gas is collected? *

1 point

s/cm3

g/s

cm3/s

s/g

What is the mean rate of the entire reaction for the following graph, in cm3/s? *

1 point

0.37

2.4

0.43

2.8

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