Suppose you have an indicator that turns from yellow to red over a pH range of 6.4 to 8.0, respectively. Fill in the blanks for each of the following. What color is the acidic form of the indicator? yellow What is the pKa of the indicator? What color is the indicator when pH = pKa?

pKa of indicator: 7.2

The indicator is yellow in acidic form

When pH = pKa, indicator will be Orange

Explanation:

pKa of a indicator is in the middle of its virage. That is

(6.4 + 8.0) / 2 = 7.2

The indicator is yellow in acidic form and red in the basic form. When pH = pKa, the indicator will be the half yellow and the half red, by colour theory, red + yellow = indicator will be Orange.

b is the correct

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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