A student is asked to research and then recommend either petrodiesel or biodiesel as the preferred fuel for a small Victorian transport company. The company stores some of its fuel supplies in tanks situated in remote locations for occasional use. The air temperature in these remote locations can range between 0 °C and 40 °C. Based on this information, the student would recommend petrodiesel rather than biodiesel because petrodiesel is A. more hygroscopic, more viscous and less likely to biodegrade when stored. B. more hygroscopic, less viscous and more likely to biodegrade when stored. C. less hygroscopic, more viscous and more likely to biodegrade when stored. D. less hygroscopic, less viscous and less likely to biodegrade when stored.

SSCE VCE Chemistry Carbon-Based Fuels: A student is asked to research a

A student is asked to research and then recommend either petrodiesel or biodiesel as the preferred fuel for a small Victorian transport company - VCE - SSCE Chemistry - Question 23 - 2018 - Paper 1

Question 23

A student is asked to research and then recommend either petrodiesel or biodiesel as the preferred fuel for a small Victorian transport company. The company stores s... show full transcript

Worked Solution & Example Answer:A student is asked to research and then recommend either petrodiesel or biodiesel as the preferred fuel for a small Victorian transport company - VCE - SSCE Chemistry - Question 23 - 2018 - Paper 1

Step 1

A. more hygroscopic, more viscous and less likely to biodegrade when stored.

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Answer

This option describes petrodiesel's properties correctly. Petrodiesel tends to be more hygroscopic, meaning it can absorb moisture from the air, which is a factor to consider in remote storage conditions. Additionally, it has a higher viscosity compared to biodiesel, making it less likely to leak or evaporate in varying temperatures. Furthermore, petrodiesel generally biodegrades at a slower rate than biodiesel, making it preferable for long-term storage under the stated temperature conditions.

Step 2

B. more hygroscopic, less viscous and more likely to biodegrade when stored.

99%

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Answer

This statement does not accurately convey the properties of petrodiesel. While it may be hygroscopic, it is not less viscous; petrodiesel is typically more viscous than biodiesel and is less likely to biodegrade rapidly. Hence, this option is incorrect.

Step 3

C. less hygroscopic, more viscous and more likely to biodegrade when stored.

96%

101 rated

Answer

This option is incorrect as it misrepresents petrodiesel. It is not less hygroscopic; rather, it can attract moisture. Moreover, while it is more viscous, it biodegrades slower than biodiesel, contradicting this statement.

Step 4

D. less hygroscopic, less viscous and less likely to biodegrade when stored.

98%

120 rated

Answer

This option incorrectly characterizes petrodiesel as less hygroscopic and less viscous. Both assertions are false, making it unsuitable for the recommended context.

A student is asked to research and then recommend either petrodiesel or biodiesel as the preferred fuel for a small Victorian transport company - VCE - SSCE Chemistry - Question 23 - 2018 - Paper 1

Worked Solution & Example Answer:A student is asked to research and then recommend either petrodiesel or biodiesel as the preferred fuel for a small Victorian transport company - VCE - SSCE Chemistry - Question 23 - 2018 - Paper 1

A. more hygroscopic, more viscous and less likely to biodegrade when stored.

B. more hygroscopic, less viscous and more likely to biodegrade when stored.

C. less hygroscopic, more viscous and more likely to biodegrade when stored.

D. less hygroscopic, less viscous and less likely to biodegrade when stored.

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