The Ksp for bismuth sulphide (Bi2S3) is 1.08 × 10–73. The solubility of Bi2S3 in mol L–1 at 298 K is
- 1.0 × 10–15
- 2.7 × 10–12
- 3.2 × 10–10
- 4.2 × 10–8
The Correct Option is A
Solution and Explanation
The correct option is(A): 1.0 × 10–15
\(Bi_2S3⇋2Bi^3+2s+3s^2-3s\)
Ksp = (2s)2(3s)3 = 108s5
108s5 = 108 × 10–75
s = 1.0 × 10–15 mol/L
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Concepts Used:
Antacids
To neutralize stomach acids antacids type of drug are used. This tablet contain substances such as calcium, sodium bicarbonate, and magnesium, which act as base in the stomach.
Antacids can be used to treat a variety of symptoms caused by too much stomach acid, including:
- Regurgitation
- Bitter taste
- Persistent dry cough
- Pain while lying down
- Difficulty in swallowing.
- Heartburn is a burning sensation in your chest or throat caused by acid reflux.
- Abdominal pain (also known as the sour stomach)
- Nausea can be caused by a variety of illnesses which includes inflammation or acid-peptic ulcers of the oesophagus, gastritis and etc.
Types of Antacids:
- Aluminium Carbonate Antacids
- Calcium Carbonate Antacids
- Magnesium Carbonate Antacids