Which characteristic would you predict from a solution that has a pH of 5?
2 answers:
Answer : The correct option is, sour taste
Explanation :
Acid : It is a substance that has ability of donating proton or hydrogen ion or hydronium ion, .
The properties of an acid are :
- Acids are sour in taste.
- The texture of an acid solution is sticky.
- It changes the color of the litmus paper to red.
- It react with a metal to give compound and hydrogen gas.
- The pH of an acid is less than 7.
Base : It is a substance that has ability of donating hydroxide ion, .
The properties of an base are :
- Base are bitter in taste.
- The texture of an base solution is slippery.
- It changes the color of the litmus paper to blue.
- It does not react with a metal.
- The pH of a base is more than 7.
As per question, the pH is 5 that means the solution is acidic in nature and follow the properties of an acid. So, the pH = 5 has the sour taste characteristic. While the other options are the properties of a base.
Hence, the correct option is, sour taste
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Answer:
Composition of the mixture:
%
%
Composition of the vapor mixture:
%
%
Explanation:
If the ideal solution model is assumed, and the vapor phase is modeled as an ideal gas, the vapor pressure of a binary mixture with and
molar fractions can be calculated as:
Where and
are the vapor pressures of the pure compounds. A substance boils when its vapor pressure is equal to the pressure under it is; so it boils when
. When the pressure is 0.60 atm, the vapor pressure has to be the same if the mixture is boiling, so:
With the same assumptions, the vapor mixture may obey to the equation:
, where P is the total pressure and y is the fraction in the vapor phase, so:
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The fractions of B can be calculated according to the fact that the sum of the molar fractions is equal to 1.