Asam Basa Practice Questions
UN (Indonesia) · UN Kimia · 128 free MCQs with instant results and detailed explanations.
128
Total
32
Easy
68
Medium
28
Hard
Start Practicing Asam Basa
Take a timed quiz or customize your practice session
Sample Questions from Asam Basa
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which of the following substances is a strong acid?
A.
Hydrochloric acid (HCl)
B.
Acetic acid (CH₃COOH)
C.
Citric acid (C₆H₈O₇)
D.
Sodium bicarbonate (NaHCO₃)
Show Answer & Explanation
Correct Answer: A
Hydrochloric acid (HCl) is a strong acid because it completely dissociates in water, releasing all of its hydrogen ions, making it a strong electrolyte. In contrast, acetic and citric acids are weak acids that do not fully dissociate.
Q2
Easy
What is the pH of a solution that has a hydrogen ion concentration of 1 x 10⁻⁷ M?
A.
7
B.
0
C.
14
D.
4
Show Answer & Explanation
Correct Answer: A
The pH of a solution is calculated using the formula pH = -log[H⁺]. For a hydrogen ion concentration of 1 x 10⁻⁷ M, pH = -log(1 x 10⁻⁷) = 7, which indicates a neutral solution.
Q3
Easy
What is the pH of a solution that is neutral at 25°C?
A.
7
B.
0
C.
14
D.
4
Show Answer & Explanation
Correct Answer: A
A neutral solution has a pH of 7 at 25°C, indicating it is neither acidic nor basic.
Q4
Medium
What is the pH level of a neutral solution at 25°C?
A.
7
B.
0
C.
14
D.
1
Show Answer & Explanation
Correct Answer: A
A neutral solution at 25°C has a pH of 7, which is considered the midpoint of the pH scale, indicating neither acidity nor alkalinity.
Q5
Medium
Which of the following substances is a strong acid?
A.
HCl
B.
CH3COOH
C.
H2CO3
D.
HF
Show Answer & Explanation
Correct Answer: A
Hydrochloric acid (HCl) is classified as a strong acid because it completely dissociates in water, producing a high concentration of hydrogen ions.
Q6
Medium
If equal volumes of 0.1 M hydrochloric acid (HCl) and 0.1 M sodium hydroxide (NaOH) are mixed, what will be the pH of the resulting solution?
A.
7
B.
0
C.
14
D.
10
Show Answer & Explanation
Correct Answer: A
When equal volumes of 0.1 M HCl and 0.1 M NaOH are combined, they completely neutralize each other, resulting in a neutral solution with a pH of 7.
Q7
Medium
Which of the following indicators would be most appropriate for determining the endpoint of a strong acid-strong base titration?
A.
Methyl Orange
B.
Bromothymol Blue
C.
Phenolphthalein
D.
Litmus
Show Answer & Explanation
Correct Answer: B
Bromothymol Blue is suitable for strong acid-strong base titrations as it changes color around pH 7, which is the expected endpoint for such reactions.
Q8
Hard
A 0.1 M hydrochloric acid solution is mixed with a 0.1 M sodium hydroxide solution in equal volumes. What is the resulting pH of the mixture?
A.
7
B.
1
C.
13
D.
0
Show Answer & Explanation
Correct Answer: A
When equal volumes of 0.1 M HCl and 0.1 M NaOH are mixed, they neutralize each other completely, producing water and a neutral salt (NaCl). Since the resulting solution has no excess acid or base, the pH is neutral at 7.
Q9
Hard
A solution has a pH of 3. What is the concentration of hydrogen ions [H+] in this solution?
A.
1 × 10^-3 M
B.
1 × 10^-7 M
C.
1 × 10^-6 M
D.
1 × 10^-4 M
Show Answer & Explanation
Correct Answer: A
The concentration of hydrogen ions [H+] can be calculated using the formula [H+] = 10^(-pH). Therefore, for a solution with pH 3, [H+] = 10^(-3) M, which equals 1 × 10^-3 M.
Q10
Hard
What is the pH of a solution with a hydrogen ion concentration of 1.0 × 10^-4 M?
A.
4
B.
10
C.
7
D.
1
Show Answer & Explanation
Correct Answer: A
The pH is calculated using the formula pH = -log[H+]. For a concentration of 1.0 × 10^-4 M, pH = -log(1.0 × 10^-4) = 4.
Showing 10 of 128 questions. Start a quiz to practice all questions with scoring and timer.
Practice All 128 Questions →Other UN (Indonesia) Subjects
Asam Basa — UN (Indonesia) UN Kimia Practice Questions Online
This page contains 128 practice MCQs for the chapter Asam Basa in UN (Indonesia) UN Kimia. The questions are organized by difficulty — 32 easy, 68 medium, 28 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.