Hydrogen Peroxide Decomposes to Water and Oxygen at Constant Pressure $2 \mathrm { H } _ { 2 }$

question 63

Multiple Choice

Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction: $2 \mathrm { H } _ { 2 }$ $\mathrm { O } _ { 2 }$ (l) ? $2 \mathrm { H } _ { 2 }$ O(l) + $\mathrm { O } _ { 2 }$ (g) $\Delta _ { \mathrm { r } }$ H = -196 kJ Calculate the value of q (kJ) in this exothermic reaction when 4.00 g of hydrogen peroxide decomposes at constant pressure?

• A)-0.0217 kJ \(\mathrm { mol } ^ { - 1 }\)
• B)1.44 kJ\(\mathrm { mol } ^ { - 1 }\)
• C)-2.31 × 10⁴kJ\(\mathrm { mol } ^ { - 1 }\)
• D)-23.1 kJ \(\mathrm { mol } ^ { - 1 }\)
• E)-11.5 kJ \(\mathrm { mol } ^ { - 1 }\)

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Definitions:

Simple Regression

Simple regression is a statistical method used to examine the relationship between one independent variable and one dependent variable by fitting a linear equation to observed data.

Slope

The measure of the steepness or incline of a line, indicating the rate of change between two variables.

Mean Value

Mean value is the average of a set of numbers, calculated by dividing the sum of all values by the quantity of numbers.