Question

Acids, bases and pH.​

Answer 1

1. The strength of an acid is based on the concentration of _______ in the solution.

a. sulphate ions ☓

b. hydroxide ions☓

c. hydronium ions ✓

d. phosphate ions ☓

2. Aqueous solutions containing bases are often called hydroxide compounds.

3. The strength of an acid or base in a solution is measured on a scale called a pH scale.

4. Which of the following choices would be classified as a base?

a. H2SO4☓

b. Mg(OH)2 ✓

c. H2CO3☓

d. CH3COOH ☓

5. Solutions with pH of seven (7) is said to be neutral.

6. Getting bit by a fire ant is painful.

a) What causes it to be painful?

A. The venom released by ants through stinger causes it to be painful. Generally it is formic acid.

b) What is something from the kitchen or bath that you could use to help ease the pain?

A. Applying soap and water or ice packs or smoothing lotions could use to help ease the pain.

c) Why would this work?

A. Following the above process on the injured area helps in relieving itching and pain.

7. Which of the following compounds is an organic acid?

a. CH3 COOH ✓

b. CH3 CO CH3☓

c. CH3 (CH2)4 CH3 ☓

d. CH3 (CH2)8 CH3☓

8. A reaction between an acid and a base is called.

a. catalyzation ☓

b. nitrification☓

c. neutralisation ✓

d. polymerization ☓

Answer 2

Answer:

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1. $\huge\orange{C)} \green{~✓~}$

2. $\huge\underline\blue{Hydroxide~compounds}$

3. $\huge\underline\red{PH~scale}$

4. $\huge\orange{b)} \green{~✓~}$

5. $\huge\underline\blue{Neutral}$

6. $\huge\bold\red{ANSWER}$

1. The ants release a chemical substances through their strings, when they bite us the chemical enter our body and leads to inching and pain.
2. Apply baking soda or toothpaste ; apply ointment prescribed by doctor ; apply ice cubes on the ant bite spot .
3. To get relief from itching and pain.

7. $\huge\orange{a)} \green{~✓~}$

8. $\huge\orange{c)} \green{~✓~}$

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