Q. 10.36 - An Introduction to General, Organic, and Biological Chemistry

Question

State whether each of the following is acidic, basic, or neutral:

a. soda $pH 13.22$

b. shampoo, $pH 5.7$

c. laundry detergent, $pH 9.44$

d. rain $pH 5.8$

e. honey, $pH 3.9$

f. cheese, $\mathrm{pH} 4.9$

Step-by-Step Solution

Answer

(Part a) The soda is acidic in nature

(Part b) The shampoo is acidic in nature

(Part c) The laundry detergent is basic

(Part d) The rain is acidic in nature

(Part e) The honey is acidic in nature

(Part f) The cheese is acidic in nature

Step 1: Introduction (part a)

The given is the components and its pH values

The objective is to determine whether the component is acidic, basic or neutral

Step 2: Explanation (part a)

On the pH scale, acidic values are below $7.0$, neutral values are $7.0$, and basic values are above $7.0$.

Acidic solution$=\mathrm{pH}<7.0\left[{\mathrm{H}}_3{\mathrm{O}}^{+}\right]>1.0\times {10}^{-7}\mathrm{M}$

Neutral solution$=\mathrm{pH}=7.0\left[{\mathrm{H}}_3{\mathrm{O}}^{+}\right]=1.0\times {10}^{-7}\mathrm{M}$

Basic solution $=\mathrm{pH}>7.0\left[{\mathrm{H}}_3{\mathrm{O}}^{+}\right]<1.0\times {10}^{-7}\mathrm{M}$

Soda is $pH=3.{22}^{+}$. A $pH$ value less than $7$ indicates an acidic solution on the $pH$ scale.

Step 3: Introduction (part b)

The objective is to determine whether the component is acidic, basic or neutral

Step 4: Explanation (part b)

$pH=5.7$ shampoo. A $pH$ value less than $7$ indicates an acidic solution on the $pH$ scale.

Step 5: Introduction (part c)

The objective is to determine whether the component is acidic, basic or neutral

Step 6: Explanation (part c)

$pH=9.44$ laundry detergent The $pH$ value greater than $7$ is a basic solution on the $pH$ scale.

Step 7: Introduction (part d)

The objective is to determine whether the component is acidic, basic or neutral

Step 8: Explanation (part d)

$pH=5.8$ rain. A $pH$ value less than $7$ indicates an acidic solution on the $pH$ scale.

Step 9: Introduction (part e)

The objective is to determine whether the component is acidic, basic or neutral

Step 10: Explanation (part e)

Honey has a pH of $pH=3.9$ on the $pH$ scale, with a value less than $7$ indicating an acidic solution.

Step 11: Introduction (part f)

The objective is to determine whether the component is acidic, basic or neutral

Step 12: Explanation (part f)

Cheese has a pH of $pH=4.9$ on the $pH$ scale, with a value less than 7 indicating an acidic solution.