A forming acid solution has a pH of 3.25. Which of these substances will raise the pH of the solution upon addition? Explain.
A) HCl
B) NaBr
C) NaCHO2
D) KCl
Did you mean "formic" acid?
Adding HCl will LOWER (make it more acid).
Adding NaBr or KCl can't have any effect since these are salts of strong acid and strong bases.
That leaves only one. I assume NaCHO2 is sodium formate which is a base and that will raise the pH (make it more basic).
Ah, a pH question! Well, let me entertain you with an answer.
Out of the options given, the substance that will raise the pH of the solution is C) NaCHO2. But let me explain why in a slightly funny way.
Imagine the pH scale is like a ladder. The lower the pH, the lower you are on the ladder and the more acidic things get. Now, HCl is like a wild circus clown that loves acidic parties. So if you add HCl to the solution, it's going to make the pH even lower because that clown just loves to bring the acidity up! So we can toss HCl out of the options.
NaBr, on the other hand, is like a chill surfer clown. It doesn't really do much to change the pH because it's pretty neutral. So, it's like bringing a surfer clown to a chemistry party - they're just there for the ride, not really affecting anything.
Now, NaCHO2 is like a magician clown. It has some tricks up its sleeve! When you add NaCHO2 to the solution, it undergoes a magical transformation and releases some OH- ions. These OH- ions are like little pH superheroes, neutralizing the excess H+ ions from the acid solution and raising the pH. It’s like the magician clown saying, "Abracadabra! Let me balance out this pH party!" So NaCHO2 is our answer.
As for KCl, well, it's just a quiet clown standing in the corner, minding its own business. It doesn't have any magical pH-changing tricks, so it won't really affect the acidity of the solution.
So, to sum it up: NaCHO2, the magician clown, is the one substance that will raise the pH of the solution. The other substances either make it more acidic or just hang around without causing much fuss.
In order to determine which substance will raise the pH of the acid solution, we need to identify which substance is a base or has basic properties. A base is a substance that can accept or donate an electron pair, thereby reducing the concentration of hydrogen ions (H+) in a solution and raising its pH.
Let's analyze each substance to see if it exhibits basic properties:
A) HCl: Hydrochloric acid (HCl) is an acid and will not raise the pH of the solution. In fact, it will further increase the concentration of hydrogen ions, thus lowering the pH.
B) NaBr: Sodium bromide (NaBr) is a salt that does not have basic properties. It does not contribute to the reduction of hydrogen ions and will not raise the pH of the solution.
C) NaCHO2: Sodium acetate (NaCHO2) is a salt composed of a strong base (NaOH) and a weak acid (CH3COOH). When dissolved in water, it undergoes hydrolysis, releasing hydroxide ions (OH-). This means that NaCHO2 has basic properties and can raise the pH of the solution upon addition.
D) KCl: Potassium chloride (KCl) is a salt with neutral properties. It does not have basic or acidic properties and will not raise or lower the pH of the solution.
Therefore, the substance that will raise the pH of the forming acid solution is C) NaCHO2 (sodium acetate). It will act as a base and help reduce the acidity of the solution.
To determine which substance will raise the pH of the forming acid solution, we need to understand the characteristics of each substance and how they interact with the solution. The pH of a solution is a measure of its acidity or alkalinity, with low pH values indicating higher acidity.
Let's analyze each substance:
A) HCl (hydrochloric acid): HCl is a strong acid that dissociates completely in water, producing H+ ions. Since the forming acid solution already has a low pH, the addition of HCl will increase the concentration of H+ ions, making the solution even more acidic. Therefore, HCl will not raise the pH.
B) NaBr (sodium bromide): NaBr is a salt composed of sodium (Na+) and bromide (Br-) ions. This compound is neutral and does not significantly affect the pH of a solution. Therefore, NaBr will not raise the pH.
C) NaCHO2 (sodium acetate): NaCHO2 is a salt composed of sodium (Na+) and acetate (CHO2-) ions. The acetate ion is the conjugate base of acetic acid, which is a weak acid. When sodium acetate dissolves in water, it releases acetate ions, which can react with H+ ions present in the solution. This reaction helps to buffer the pH, preventing large changes in acidity. Adding sodium acetate to the forming acid solution will introduce acetate ions, leading to a slight increase in pH. Therefore, NaCHO2 will raise the pH.
D) KCl (potassium chloride): KCl is a salt composed of potassium (K+) and chloride (Cl-) ions. Similar to NaBr, KCl is a neutral compound and does not significantly affect the pH of a solution. Therefore, KCl will not raise the pH.
In conclusion, the substance that will raise the pH of the forming acid solution upon addition is C) NaCHO2 (sodium acetate), while the others (A) HCl, B) NaBr, and D) KCl) will not have a significant effect on the pH.