Answer:
2
Explanation:
To answer this correctly, we need to make a reference to the pH scale. Here we know that pH 1-6 stands for acidity where the smaller the value, the higher the concentration of H3O+ and the higher the acidity. Also, pH 7 stands for neutral, there is an interpreted balance here, where the concentrations are averagely equal. Also , we have pH 8 to 14 where we have the alkalinity, the higher the value the higher the concentration of OH-.
Now let’s solve the question at hand.
1 is wrong
Water is termed neutral with an average balance of the two ions. pH 9 means higher OH- which stipulates lesser H+ than water.
2 is correct
The pH is termed alkaline and has more hydroxide concentration than water.
3 is wrong
It should have a higher concentration of OH- than water
4 is wrong
It should have a higher acidity and lesser alkalinity. This translates to higher H+ and lower OH- relative to water
