According to the pH chart, which is the strongest base?
2 answers:
Answer : The correct option is, (B) NaOH
Explanation :
Indicators : It is a substance that gives the visible sign by the color change of the chemical species like an acid or a base.
Universal Indicator : It changes color when mixed with an acid or base.
Universal Indicator turns red when it is added to a strong acid, it turns blue or purple when it is added to a strong base and it turns a yellowish-green when it is added to a neutral solution.
The pH range is, 1 to 14.
When the value of pH is less than 7 then the solution is acidic.
When the value of pH is more than 7 then the solution is basic.
When the value of pH is equal to 7 then the solution is neutral.
According to the pH chart, HCl is a strong acid whose pH is 1, saliva is also an acid whose pH is less than 7 that is 6.8. NaOH is a strong base whose pH is 14. The blood is slight basic in nature and the pH of blood is 7.4.
Hence, the strongest base is, (B) NaOH
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Rubidium is an element that belongs to Group 1. As such it will have physical properties similar to the other Group 1 elements. Rubidium is below Potassium in the periodic table but above Cesium. As such it would be most like one of those two elements.
Answer:
<h3>The answer is 10 g/mL</h3>Explanation:
The density of a substance can be found by using the formula
From the question
mass = 300 g
volume = final volume of water - initial volume of water
volume = 40 - 10 = 30 mL
We have
We have the final answer as
<h3>10 g/mL</h3>Hope this helps you