Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: The amphoteric nature of water is explained by using Lewis acid/base concept
Reason R: Water acts as an acid with NH3 and as a base with H2S.
In the light of the above statements choose the correct answer from the options given below:
Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: The amphoteric nature of water is explained by using Lewis acid/base concept
Reason R: Water acts as an acid with NH3 and as a base with H2S.
In the light of the above statements choose the correct answer from the options given below:
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is NOT the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
The Correct Option is A
Solution and Explanation
The correct option is(D): A is false but R is true.
The amphoteric nature of water is explained by using Bronsted-Lowry acid base concept
\(H_2O(acid)+NH_3⇋OH^-+NH_4^+\)
\(H_2O(base)+H_2S⇋H_3O^++HS^-\)
Hence, A is false but R is true.
Top JEE Main Chemistry Questions
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- At equilibrium the concentrations of and in a sealed vessel at . What will be for the reaction
- Find out the major products from the following reactions
Cobalt chloride when dissolved in water forms pink colored complex $X$ which has octahedral geometry. This solution on treating with cone $HCl$ forms deep blue complex, $\underline{Y}$ which has a $\underline{Z}$ geometry $X, Y$ and $Z$, respectively, are
- The correct order of atomic radii is:
Top JEE Main Chemical Reactions of Aldehydes Ketones and Carboxylic Acids Questions
- The major product formed in the following reaction is-
- In the following reactions, find the product A and B
Arrange the following in decreasing acidicstrength
- $CH_3 - CH_2 - CN \xrightarrow[\text{Ether}]{CH_3MgBr} A \xrightarrow{H_3O^+} B \xrightarrow[HCl]{Zn - Hg} C$ The correct structure of $C$ is
In a reaction,
reagents ' X ' and ' Y ' respectively are :
Top JEE Main Questions
- In a hydrogen like atom, when an electron jumps from the $M$ - shell to the $L$ - shell, the wavelength of emitted radiation is $\lambda$. If an electron jumps from $N$-shell to the $L$-shell, the wavelength of emitted radiation will be :
- Two masses $m$ and $\frac{m}{2}$ are connected at the two ends of a massless rigid rod of length $l$. The rod is suspended by a thin wire of torsional constant $k$ at the centre of mass of the rod-mass system(see figure). Because of torsional constant $k$, the restoring torque is $\tau =k\theta$ for angular displacement $\theta$. If the rod is rota ted by $\theta_0$ and released, the tension in it when it passes through its mean position will be:
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- The value of is
- The number of terms of an is even. The sum of the odd terms is and of the even terms is . The last term exceeds the first by . Then the number of terms in the series is ______.
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