Why is the heat of vaporization of water greater at room temperature than it is at its boiling point?

Q: Why is the enthalpy of vaporization for water much greater than the vaporization of fusion? What…

A: Since in case of fusion, we just try to lose the packing of the molecules from solid to liquid  And…

Q: Is dry ice evaporating  process exothermic or endothermic? Indicate the sign of ∆H.

A: Given: dry ice evaporating. The evaporation of dry ice requires input of heat energy.

Q: What are intermolecular forces? Why are intermolecularforces important?

A: intermolecular forces are the type of interactions between the atoms or molecules that helps in…

Q: What is the heat of vaporization for a liquid and why is it useful?

A: The vaporization is the transition process where liquid converted to vapor phase. The heat of…

Q: What does not correspond to the molar heat of fusion?

A: According to the first law of thermodynamics, the total heat change of a system at constant pressure…

Q: The molar heat of vaporization of ammonia is 23.3 kJ/mol. What is themolar heat of condensation of…

A: Molar heat of condensation is the amount the energy released when one mole of the gaseous phase of a…

Q: How much energy is required to vaporize 188 g of butane (C4H10) at its boiling point, if its ΔHvap…

A: Enthalpy of evaporation is defined as the energy required to change an amount of substance from…

Q: Why are intermolecular forces important?

A: Intermolecular forces are the attractive forces that occur between non-polar and polar molecules.…

Q: he heat of vaporization of water is 540 cal/g. How much heat is needed to change 2.

A: Solution-    Heat of vaporization of water= 540 cal/g means amount of heat required to vaporize…

Q: A student is asked to calculate the amount of heat involved in changing 10.0 g of liquid bromine at…

A:

Q: What is the heat of fusion and why is it important?

A: Fusion is the process of conversion of a material from solid state to liquid state such as melting…

Q: “Vapor pressure increases with increasing temperature because the intermolecular forces of a liquid…

A: The question is based on the concept of intermolecular forces of attraction. the strength with which…

Q: ind molar heat of fusion for ice

A: According to first law of thermodynamics,the total energy of a system remains conserved.If one…

Q: The enthalpy of vaporization of water is larger than its enthalpy of fusion. Explain why.

A: Given:It is given that,"The enthalpy of vaporization of water is larger than its enthalpy of…

Q: Boiling is the temperature at which the vapor pressure of the liquid exceeds the atmospheric…

A: At high altitude, atmospheric pressure is low and hence water boils at lower temperature.

Q: How is intermolecular forces influence the properties of liquid?

A: The physical properties such as melting point, boiling point, vapor pressure and viscosity are…

Q: A 43.70 g sample of solid magnesium is initially at 632.00°C. If the sample is heated at constant…

A: Required information: Specific heat capacity of Mg = 1.020Jg°C Formula used:…

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: Solution From the heating curve, it is clear that the substance is solid at   and the melting point…

Q: What’s the latent heat of fusion of water? The latent heat of vaporization? Why do we use the term…

A:

Q: What point where ethanol begins to melt?

A: Melting point of ethanol is -114.1 °C .  The temperature at which any solid begins to melt is known…

Q: When’s molecular compound melts, there is no temperature change because the heat energy is used to:

A: Answer

Q: explain (Formation of steam)

A: In solid state ,molecules of water are strongly packed ,having high forces of attraction and…

Q: What does not correspond to the molar heat of fusion? O AHfus the heat absorbed by one mole of a…

A: The molar heat of fusion of a substance is the heat absorbed or released when 1 mole of the…

Q: How many grams of benzene, C,H,, can be melted with 21.8 kJ of heat energy? The molar heat of fusion…

A: Given data: The heat energy (q)=21.8 kJ. The molar heat of fusion of benzene=9.95 kJ/mol. To find:…

Q: How much heat is required to vaporize 54.9g of acetone at its boiling point? The heat of…

A:

Q: Is the amount of latent heat associated with the process of deposition the same as or less than the…

A: Latent heat can be defined as the heat energy that required to convert a solid into a liquid or…

Q: How much heat is required to change 600. g of liquid mercury to gaseous merouty at the boiling?

A: To calculate the heat required to change the liquid mercury to gaseous mercury at its boiling…

Q: Caculate the mass of water that can be vaporized at its boiling point with 200kj of heat

A: The moles of water that can be vapourised is determined first by using the given heat value and the…

Q: Determine the enthalpy of vaporization for this substance. ΔHvap =

A: The gradient of the line lnP vs 1/T graph gives the value of ∆Hvap.

Q: The standard heat of vaporization for water is 40,700J/mol. What is the boiling point of water at a…

A: By Clausius-Clayperon equation lnP2P1= △HR(1T1- 1T2) △H=Heat of vaporizationP2 = Final  pressureP1=…

Q: The normal boiling point of a substance is 433 °C. Calculate the pressure at which this substance…

A: this solution is done using the clausius-clapeyron equation .

Q: The heat of vaporization for ethyl ether is 351 Jig and that for ethyl alcohol is 855 Jig. From…

A: Given: Heat of vaporization for ethyl ether = 351 J/g. And the heat of vaporization for ethyl…

Q: The heat of vaporization of water is 40.66 kJ/mol. How much heat is absorbed when 2.12 g of water…

A: ANSWER : Concept and reason :  We known that the relationship between specific heat of a substance…

Q: The greater the molar heat of vaporization of a liquid, the greater its vapor pressure. Is this true…

A: It is not true.  Explanation  As higher the molar heat of vaporization,  .more is the intermolecular…

Q: How much heat energy is required to boil 66.7 g of ammonia, NH3? The molar heat of vaporization of…

A: Mass of NH3 = 66.7 g  Molar heat of vaporization = 23.4 KJ/mol

Q: Consider

A: Enthalpy of vaporisation is heya realease when liquid convert into gas

Q: How many grams of benzene, C,H,, can be melted with 88.8 kJ of heat energy? The molar heat of fusion…

A: Given : Molar heat of fusion of benzene(∆Hfus ) = 9.95 kJ/mol  Heat energy(q) = 88.8 kJ   We have to…

Q: Why is molar heat of fusion lower than molar heat of vaporization?

A:

Q: In which phase is the potential energy at the highest level in the above heating curve?

A: In the heat curve above:E → represent solid stateD → represent  conversion from solid to liquidC →…

Q: The heat of vaporization of water is 40.66 kJ/mol. How much heat is absorbed when 3.17 g3.17 g of…

A: Given that the heat of vaporization of water is 40.66 KJ/mol. The mass of water is 3.17 g. Here, the…

Q: The heat of vaporization of water at the normal boiling point, 373.3K, is 40.66kJ/mol. The specific…

A: For any specific compound that possess an amount of 1.0 , the heat energy (q) that is required for…

Q: Which processes are important for determining the vapor pressure of a liquid? Select all that are…

A: States of a matter Matter can exist in three states: solid, liquid, and gaseous In solid-state…

Q: Which phase change involves the absorption of heat?

A: A phase change is occured when a matter changes from one state to another state. The possible states…

Q: What is the relationship between the intermolecular forces in a liquid and its vapor pressure?

A: The relation between the inter-molecular forces in a liquid and its vapour pressure is as follows:

Q: Draw a phase diagram with a path to transform liquid into vapor without going through sublimation…

A: Phase diagram: The phase diagram of a substance is represented through a graph in which the change…

Q: Pentane C5H12 boils at 360C at 1 atmosphere pressure. What is the molar heat of vaporization in…

A: The molar heat of vaporisation and temperatures and pressures of substance (pentane) related to each…

Q: How much energy is required to vaporize 250 g of water at its boiling point?

A: The energy required for the vaporization of water can be calculated from the standard value of the…

Q: Why does the temperature of a substance stay constant during a phase change such as vaporization?…

A: To explain : Why does the temperature of a substance stay constant during a phase change such as…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.