Asked by Giulia
A student carried out an experiment to find the rate of decomposition of hydrogen peroxide into
water and oxygen gas. The student used 100 cm3 of a 1M solution of hydrogen peroxide at 25°C
and 1 atm pressure.
1 g of powdered MnO2 as a catalyst was added and the solution was constantly stirred. The
student measured the total volume of oxygen produced.
The procedure was repeated, but this time using 100 cm3 of 2M hydrogen peroxide, under
identical conditions.
Which option below shows the effect on (R) the rate of reaction, (V) the total volume of oxygen
collected, by using the 2M solution compared to the 1M solution?
water and oxygen gas. The student used 100 cm3 of a 1M solution of hydrogen peroxide at 25°C
and 1 atm pressure.
1 g of powdered MnO2 as a catalyst was added and the solution was constantly stirred. The
student measured the total volume of oxygen produced.
The procedure was repeated, but this time using 100 cm3 of 2M hydrogen peroxide, under
identical conditions.
Which option below shows the effect on (R) the rate of reaction, (V) the total volume of oxygen
collected, by using the 2M solution compared to the 1M solution?
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