1. what is refractive Index 2. Why is it use in chemistry 3.What does it mean when two substances have the same refractive index?

Please exaplain in detail:

1. what is refractive Index

2. Why is it use in chemistry

3.What does it mean when two substances have the same refractive index?

For example:

If our product (isoamyl acetate) has a RI=1.407 and the true values or RI of isoamyl alcohol is 1.407 and the true value for isoamyl acetate is= 1.400

What does that mean?

Expert Solution

Ans. #1. Refractive index of a medium (substance) is defined as the ratio of speed of light in vacuum to its speed in the specified medium.

That is,

RI = (3.6 x 10⁸ m/s) / speed of light in the medium

Since, the speed of light in a medium (substance) is always less than that of vacuum (3.0 x 10⁸ m/s), the value of RI is always greater than 1.0.

#2. All pure substance, if permit transmittance of light through it, like crystals, have a specified value of refractive index. Any deviation from the standard value of RI indicates impurity of the substance.

Because RI of a substance is its intrinsic property, the value of RI can be used to determine identity, purity, and, concertation of a crystal or other substances (if they permit transmittance of light through them).

#3. The same value of RI indicates that the two compounds reduce the speed of light through their medium by same index. Practically, two substance with same RI value can’t be differentiated using a refractometer (a substance that measure RI of a substance).

Given, RI of isoamylacetate = 1.407 ; RI of isoamyl alcohol = 1.400

Using a good-quality refractometer, both the compounds can be differentiated from each other because they have different values of RI (though the difference is small).

queen_honey_blossom answered 2 years ago

1.Why/When would you use a screening design? 2. What does an orthogonal design mean? 3.T or...

1.Why/When would you use a screening design? 2. What does an orthogonal design mean? 3.T or F: A 2-factor design is said to be balanced if each factor is run an unequal number of times at the high and low levels.

1. What does diffraction mean? 2. When does diffraction occur? 3. When looking at an interference...

1. What does diffraction mean? 2. When does diffraction occur? 3. When looking at an interference or diffraction pattern, what does an anti-node look like? 4. When looking at an interference or diffraction pattern, what does a node look like? 5. What safety precautions are important to keep in mind while you're using a laser pointer?

3. For a solar cell, n-Si is given to have a refractive index of 3.435. The...

3. For a solar cell, n-Si is given to have a refractive index of 3.435. The average power incident (Pin) is 92.5 mW/cm2. (a). Evaluate the surface reflection loss of the silicon solar cell. (b). Design an antireflection coating to eliminate the loss for light with 0.64 μm wavelength (provide index and thickness of this coating).

What does it mean when you have a 3:1 current ratio? Explain

What does hx mean in organic chemistry

1. What does Stanton mean when he refers to the “element of 2+2?” 2. What does...

1. What does Stanton mean when he refers to the “element of 2+2?” 2. What does Stanton say about temperament?

1) What is inflation? 2) What is deflation? 3) What is the Consumer Price Index? Use...

1) What is inflation? 2) What is deflation? 3) What is the Consumer Price Index? Use the following table to solve questions 4-7: https://inflationdata.com/Inflation/Consumer_Price_Index/HistoricalCPI.aspx?reloaded=true#Table (Links to an external site.) 4) Michael went to AMC theaters and paid $12.00 for a movie ticket. However, he wants to know what the price of a movie ticket would be in 1990? 5) Joanne is pumping gasoline at ExxonMobil and saw that the price is $3.39 per gallon. She is curious to see if...

Two substances, A and B, have the same mass. Substance A is at a higher temperature...

Two substances, A and B, have the same mass. Substance A is at a higher temperature than B, and heat transfers between them until equilibrium is reached. The decrease in the temperature of A is less than the increase in temperature of B. Which substance has the larger specific heat?

1. What does the word “marginal” mean? 2. What does the phrase “marginal analysis” mean? 3....

1. What does the word “marginal” mean? 2. What does the phrase “marginal analysis” mean? 3. What does marginal revenue mean? 4. What does marginal cost mean? 5. What does marginal profit mean? How are marginal revenue and marginal cost related to marginal profit? 6. Recall that profit is like a hill; it goes up and then it goes down. Our goal as a firm is to choose the value of Q that gets us to the top of the...

When measuring a refractive index, what should you do if: A) No dividing line between light...

When measuring a refractive index, what should you do if: A) No dividing line between light and dark areas can be observed through the eye piece? B) The dividing line can be seen, but it is fringed with color.

Question