What does pH measure? the concentration of oxygen atoms in solution the total number of acid molecules in solution the total num
2 answers:
Answer: Option (d) is the correct answer.
Explanation:
pH is defined as the amount of hydrogen ions present in a solution. It is also the negative log of concentration of hydrogen ion.
Mathematically, pH =
where, means hydrogen ions and
is the concentration of sodium ions.
When pH of a solution ranges from 0 to 6.9 then it means that solution is acidic in nature. When pH equals to 7 then solution is neutral in nature and when pH ranges from 7.1 to 14 then it means solution is basic in nature.
Thus, we can conclude that pH measures the concentration of hydrogen ions in solution.
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Answer:
Rb: [Kr] 5s
Step-by-step explanation:
Rb is element 37, the first element in Period 5.
It has one valence electron, so its valence electron configuration is 5s.
The noble gas configuration uses the symbol of the previous noble gas as a shortcut for the electron configurations of the inner electrons.
The preceding noble gas is Kr, so the electron configuration is Rb: [Kr] 5s.
