Chemistry, 12.02.2020 01:41 TheSmartRey

Which has the smallest enthalpy of fusion? a. HCl b. Li2O c. MgO d. H2O Which has the highest normal boiling point? a. CH4 b. NH3 c. H2O Which has the greatest heat of vaporization? a. H2O b. H2Se c. H2Te d. H2S Which has the greatest vapour pressure at 25°C? a. H2O b. CO2 c. SiO2 Which has the least viscosity? a. HOCH2CH2OH b. CH3CH2OH c. CH3(CH2)3CH3

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Answer from: bfell92

The enthalpy of fusion is known as the latent heat of fusion of a substance. It results from providing energy typically heat to an object. The smallest enthalpy of fusion is thus HCL gas.

Due to the hydrogen bonds being stronger hence the NH3 and H2O have the strongest/ highest boiling points. Water has the greatest heat of vaporization. Hence option a is correct. Is it is defined by the amount of heat At 25 degrees C greatest vapor pressure is at that of b.CO2. Viscosity is the measure of resistance to flow. The least viscosity will be found in c.CH3(CH2)3CH3.

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Answer from: steve4020

1. Answer is a. HCl gas

2. Answer is c. H2O liquid

3. Answer is a.H2O liquid

4. Answer is b.CO2 gas

5. Answer is c.CH3(CH2)3CH3

Explanation:

1. Which has the smallest enthalpy of fusion?

a. HCl gas

b.Li2O solid

c. MgO solid

d. H2O liquid

Answer is a. HCl gas

2. Which has the highest normal boiling point?

a.CH4 gas

b. NH3 gas

c. H2O liquid

Answer is c. H2O liquid

3. Which has the greatest heat of vaporization?

a.H2O liquid

b. H2Se gas

c. H2Te gas

d.H2S gas

Answer is a.H2O liquid

4. Which has the greatest vapour pressure at 25°C?

a. H2O liquid

b.CO2 gas

c. SiO2 solid

Answer is b.CO2 gas

5. Which has the least viscosity? a. HOCH2CH2OH syrupy liquid

b. CH3CH2OH liquid boiling point above 70 °C

c.CH3(CH2)3CH3 liquid, low boiling point below 40 °C

Answer is c.CH3(CH2)3CH3

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Which has the smallest enthalpy of fusion? a. HCl b. Li2O c. MgO d. H2O Which has the highest normal...

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