Compound a has a pka of 7 and compound b has a pka of 10. compound a is how many times more acidic than compound b?
2 answers:
Compound A is 1000 times more acidic than compound B
<h3>Further explanation</h3>The pKa value is an indicator of the strength of an acid
The pKa is a logarithmic function. pKa is the negative logarithm to the base ten of Ka
pKa = - log Ka
The smaller the pKa, the stronger the acid
A difference of 1 pKa shows a difference of 10 times in the acidity
Suppose there is a difference of 3 pKa units, then corresponds to a 10³ difference in acidity
Compound A has a pKa of 7 and compound B has a pKa of 10.
Because the value of pKa compound A is smaller than compound B, compound A is more acidic than compound B
Ka value of each compound:
- compound A
pKa = 7
pKa = - log Ka
7 = - log Ka
Ka = 10⁻⁷
- compound B
pKa = 10
pKa = - log Ka
10 = - log Ka
Ka = 10⁻¹⁰
So that the difference in acidity
10⁻⁷ / 10¹⁰ = 10³ = 1000 times
<h3>Learn more</h3>The pH scale is a measurement system
the ka reaction of hcn
strong enough acids to react almost completely with a hydroxide ion
Keywords: pKa, strong acid, logarithmic function, compound
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Answer:
HCO₂
Explanation:
From the information given:
The mass of the elements are:
Carbon C = 26.7 g; Hydrogen H = 2.24 g Oxygen O = 71.1 g
To determine the empirical formula;
First thing is to find the numbers of moles of each atom.
For Carbon:
For Hydrogen:
For Oxygen:
Now; we use the smallest no of moles to divide the respective moles from above.
For carbon:
For Hydrogen:
For Oxygen:
Thus, the empirical formula is HCO₂