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Biology rate of reaction question
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Sid Nandula
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#1
The action of the enzyme catalase is shown below.
A student investigated the effect of hydrogen peroxide concentration on the rate of
this reaction. He used catalase from potato tissue.
The student:
• put five potato chips in a flask
• added 20 cm3 of 0.5 mol dm–3 hydrogen peroxide solution to the flask
• measured the time in seconds for production of 10 cm3 of oxygen gas
• repeated this procedure with four different concentrations of hydrogen
peroxide solution.
table is in q7.1 in this link:
https://pmt.physicsandmathstutor.com...20AS-level.PDF
7.3) The student gave the maximum rate of reaction a value of 1.0 arbitrary units.
Complete Table 5 by calculating the rate of reaction in arbitrary units at each
hydrogen peroxide concentration. Record the rates using an appropriate number of
significant figures.
Here is the mark scheme:
https://pmt.physicsandmathstutor.com...20AS-level.PDF
Why did they divide 6/time?
A student investigated the effect of hydrogen peroxide concentration on the rate of
this reaction. He used catalase from potato tissue.
The student:
• put five potato chips in a flask
• added 20 cm3 of 0.5 mol dm–3 hydrogen peroxide solution to the flask
• measured the time in seconds for production of 10 cm3 of oxygen gas
• repeated this procedure with four different concentrations of hydrogen
peroxide solution.
table is in q7.1 in this link:
https://pmt.physicsandmathstutor.com...20AS-level.PDF
7.3) The student gave the maximum rate of reaction a value of 1.0 arbitrary units.
Complete Table 5 by calculating the rate of reaction in arbitrary units at each
hydrogen peroxide concentration. Record the rates using an appropriate number of
significant figures.
Here is the mark scheme:
https://pmt.physicsandmathstutor.com...20AS-level.PDF
Why did they divide 6/time?
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scrk009
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#2
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#2
because in the previous table you had to solve, to get the Rate of reaction
/ arbitrary units and the and in 7.3 the maximum rate of reaction is the value of 1.0 arbitrary units. If u refer back to the table , 1.0 arbitrary units has the 'Time for production of 10 cm3 of oxygen gas / seconds' containing 1.0, by 6. So 6 will be mainly used throughout.
/ arbitrary units and the and in 7.3 the maximum rate of reaction is the value of 1.0 arbitrary units. If u refer back to the table , 1.0 arbitrary units has the 'Time for production of 10 cm3 of oxygen gas / seconds' containing 1.0, by 6. So 6 will be mainly used throughout.
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Sid Nandula
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#3
(Original post by scrk009)
because in the previous table you had to solve, to get the Rate of reaction
/ arbitrary units and the and in 7.3 the maximum rate of reaction is the value of 1.0 arbitrary units. If u refer back to the table , 1.0 arbitrary units has the 'Time for production of 10 cm3 of oxygen gas / seconds' containing 1.0, by 6. So 6 will be mainly used throughout.
because in the previous table you had to solve, to get the Rate of reaction
/ arbitrary units and the and in 7.3 the maximum rate of reaction is the value of 1.0 arbitrary units. If u refer back to the table , 1.0 arbitrary units has the 'Time for production of 10 cm3 of oxygen gas / seconds' containing 1.0, by 6. So 6 will be mainly used throughout.
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WillRogs
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befairhuman
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#5
Same here I still cannot see why that would be the reason to divide the time by 6. Can someone break it down step by step please.
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BlueChicken
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#6
(Original post by befairhuman)
Same here I still cannot see why that would be the reason to divide the time by 6. Can someone break it down step by step please.
Same here I still cannot see why that would be the reason to divide the time by 6. Can someone break it down step by step please.
It's just scaling to give an arbitrary unit.
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