I need help with the following chemistry questions. If you could possibly add ho

Question

I need help with the following chemistry questions. If you could possibly add how you got the answers that would be great!

2. A solution of KF in water will be

A. Acidic

B. Basic

C. Nuetral

3.  Oxalic acid (H2C2O4) is weak acid found in the leaves of rhubarb. Which of the following solutions will have the highest pH?

A. 1.0 M H2C2O4

B. 0. 5 M H2C2O4

C. 1.0 × 10–4 M H2C2O4

D. 0.00075 M H2C2O4

4. All of the following solutions are 0.025 M, which of the solutions contains the highest concentration of OH –?

acetic acid (pH 3.17)

ascorbic acid (pH 6.70)

phenol (pH 5.73)

iodic acid (pH 1.60)

5.

Consider the following reaction.

This reaction indicates that:

a.

acetic acid (pH 3.17)

b.

ascorbic acid (pH 6.70)

c.

phenol (pH 5.73)

d.

iodic acid (pH 1.60)

When a solution of HF (a weak acid) is added to a solution contng HPO4 (here, a base), the equation for reaction that occurs is: HF(aq) +HPO4-(ag) H2PO (ag)+D-(ag) O d.

Explanation / Answer

Ans 1 b) HF + HPO42- ---> H2PO4- + F-

Since HF acts as a bronsted lowry acid , it donates its proton to the bronsted lowry base HPO42- .

So choice b correctly depicts this interaction between acid and base.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---