What property of a solution causes an acid–base indicator to change to different colors?

2 answers:

7 0

The most common method to get an idea about the pH of solution is to use an acid base indicator. An indicator is a large organic molecule that works somewhat like a " color dye". Whereas most dyes do not change color with the amount of acid or base present, there are many molecules, known as acid - base indicators<span> , which do respond to a change in the hydrogen ion concentration. Most of the indicators are themselves weak acids.</span>

LenaWriter [7]3 years ago

6 0

Answer:

Different concentrations of hydronium ion or the nature of the solution (acidic or basic) causes an acid-base indicator to change to different colors.

Explanation:

An acid base indicator is a weak organic acid or base. It shows different colors in acidic and basic medium. So, if a solution is acidic the indicator exhibits one color and if it is basic it shows a different color. So depending on the solution pH or the concentration of hydronium ion they change their color.

You might be interested in

A scientist observed changes in the gas pressure of one mole od a grass in a sealed chamber with a fixed volume. To identify the

bixtya [17]

C. Temperature of the chamber. As temperature increases, pressure increases. As temp decreases, pressure decreases.

8 0

3 years ago

In 1930 the American physicist Ernest Lawrence designed the first cyclotron in Berkeley, California. In 1937 Lawrence bombarded

IrinaK [193]

Answer:

⁹⁶₄₂Mo + ²₁H ⇒ ⁹⁸₄₃Tc

Explanation:

During the bombardment of a molybdenum target with deuterium ions, an element not found in nature was produced.The name of the element formed in the process is technetium. It is an element with the symbol Tc, mass number of 98, and atomic number 43. The nuclear equation is shown below:

⁹⁶₄₂Mo + ²₁H ⇒ ⁹⁸₄₃Tc

Technetium is the lightest element whose isotopes are all radioactive in nature except the fully ionized state of isotope ⁹⁷Tc. It is silvery gray in color and can be found between manganese and rhenium in group seven of the periodic table.

3 0

4 years ago

7. A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 250 torr . Pure

Sliva [168]

Answer:

mole fraction hexane 0.64

Explanation:

We know from Raoult's law of partial pressures that for a binary mixture, the vapor pressure above solution is the sum of the partial pressures of each gas:

P total = P(A) + P(B)

Also the partial pressure of a component is the product of its mole fraction , X, times its pure vapor pressure:

Ptotal = X (A)Pº(A) + X (B)Pº(B)

Since for solution of two components the mole fractions add to one, we now have all the information required to compute the answer.

250 torr = X(hexane)151 torr + ( 1 - X(hexane) )425 torr

250 = 151X(hexane) + 425 - 425 X(hexane)

274 X(hexane) = 175

X(hexane) = 1 -0.6 = 0.64

8 0

3 years ago

How many miles of carbon are needed to react with 5.44moles of so2

Romashka-Z-Leto [24]