1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Colt1911 [192]
3 years ago
11

Which of the following substances would you predict to have the highest ΔHvap?

Chemistry
1 answer:
alexandr402 [8]3 years ago
8 0

Answer: Option (4) is the correct answer.

Explanation:

Heat of vaporization is defined as the heat energy which is necessarily added to a liquid substance in order to transform the quantity of the substance into a gas.

For example, in H_{2}O there will be presence of strong hydrogen bonding and in order to break this bond high amount of heat energy is required.

Whereas H_{2}, F_{2} and SiF_{4} are all covalent compounds which are bonded together by Vander waal forces. As these forces are weak in nature hence, they require less amount of heat energy to convert into vapor state.

Hence, they have low value of \Delta H_{vap}. Also, Ar is a noble gas and it has only Vander waal forces. So, it will also have low value of \Delta H_{vap}.

Therefore, we can conclude that out of the given options H_{2}O have the highest \Delta H_{vap}.

You might be interested in
When sodium is put in water, the metal floats on the surface and reacts to form sodium
mrs_skeptik [129]

Answer: Sodium also floats on the surface, but enough heat is given off to melt the sodium (sodium has a lower melting point than lithium and the reaction produces heat faster) and it melts almost at once to form a small silvery ball that dashes around the surface.

Explanation:

8 0
3 years ago
Read 2 more answers
What is acid according to arhenias concept?
nignag [31]

Answer:

Acid are those substances which release H + ions when dissolved in water.

Get that hundooo!

7 0
3 years ago
Physical Meaning of pKa Which of the following aqueous solutions has the lowest pH: 0.1 M HCl; 0.1 M acetic acid (pKa = 4.86); 0
ser-zykov [4K]

Answer:

<em>The solution with the lowest pH is 0.1 M HCl.</em>

Explanation:

Since the three solutions have the same concentration (0,1M) it is only necessary to look at the pKa of each solution.

Also, knowing that a higher pKa means a lower Ka, because pKa = -Log (Ka). Thus, a lower Ka means a lower concentration of protons with a higher pH ( pH = -Log [H+].

The HCl doesn't have a pKa because is a strong acid that dissociates completely. Therefore, this solution produces a lower pH. Looking at the pKa of acetic acid and formic acid solutions, the second with the lowest pH is the formic acid solutions and the higher pH is for the acetic acid solution.

3 0
3 years ago
Several companies produce personal water filters that can travel anywhere. Such filters make any water safe to drink by removing
Olenka [21]

Answer:

Follows are the solution to this question:

Explanation:

In this question, the given problem is used for secure accessing, drinkable water anywhere helps to solve personal filtered water. There are also both inexpensive and easy to access.  Its components used mostly for everyone's manufacturing are long-lasting. Instead of just endangering users, those who protect the other, are the potential benefits to overall outweigh the potential.

5 0
3 years ago
A student is given a sample of CuSO4(s) that contains a solid impurity that is soluble and colorless. The student wants to deter
DochEvi [55]

Answer:

The impurity which is present in the solution of copper sulphate (CuSO4) is determined by the an instrument known as spectrophotometer.

Explanation:

Spectrophotometer is a device or an instrument which is used to determine the concentration of a chemical by measuring the detection of light intensity that is coming from the solution. If the solution of copper sulphate is checked through spectrophotometer, we can can determined or measure the amount of copper sulphate and the impurity in the solution.

3 0
3 years ago
Other questions:
  • What is the specific heat of metal if its mass is 26.86g and it requires 418.6 J of heat energy to raise its temperature from 27
    5·1 answer
  • Calculate the ph of a 0.60 m h2so3, solution that has the stepwise dissociation constants ka1 = 1.5 × 10-2 and 1.82 1.06 1.02 2.
    11·2 answers
  • what is the ratio of the rate of effusion of helium (atomic mass 4.00 amu) to that of oxygen gas (molecular mass 32.0 amu)?
    7·1 answer
  • One part nitrogen gas combines with one part oxygen gas to form how many part(s) dinitrogen monoxide (nitric oxide)?
    11·1 answer
  • .Put 8.4 x 10^-6 into standard notation.
    13·1 answer
  • At 350 k, kc = 0.142 for the reaction 2 brcl(g) ⇀↽ br2(g) + cl2(g) an equilibrium mixture at this temperature contains equal con
    15·1 answer
  • For an enzymatically catalyzed reaction in which the measured values for KM and Vmax are, respectively, 10.0 mM and 0.172 mM min
    12·1 answer
  • Which of the following statements is a testable hypothesis for an experiment
    12·2 answers
  • 1. which of the following elements is NOT multivalent?
    11·1 answer
  • Options:
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!