Question:
Sodium Carbonate cannot be used in place of $(NH_4)_2CO_3$ for the identification of $Ca^{2+},\, Ba^{2+}$ and $Sr^{2+}$ ions (in group V) during mixture analysis because :
Sodium Carbonate cannot be used in place of $(NH_4)_2CO_3$ for the identification of $Ca^{2+},\, Ba^{2+}$ and $Sr^{2+}$ ions (in group V) during mixture analysis because :
Updated On: Aug 21, 2024
- $Mg^{2+}$ ions will also be precipitated.
- Concentration of $CO_3^{2-}$ ions is very low.
- Sodium ions will react with add radicals.
- Na+ions will interfere with the detection of $Ca^{2+},\, Ba^{2+},\, Si^{2+}$ ions.
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
If $Na_2CO_3$ is used in place of $(NH_4)_2CO_3$. It will precipitate group $V$ radicals as well as magnesium radicals. The reason for this is the high ionization of $Na_2CO_3$ in water into $Na^+$ and $CO_3^{--}$. Now the higher concentration of $CO_3^{--}$ is available which exceeds the solubility product of group $V$ radicals as well as that of magnesium radicals.
Was this answer helpful?
0
0
Top Questions on allotropes of carbon
- Species having carbon with sextet of valence electron and acts as an electrophile is:
- JEE Main - 2024
- Chemistry
- allotropes of carbon
- Graphite is a good conductor of electricity due to the presence of-
- CUET (UG) - 2023
- Chemistry
- allotropes of carbon
- The normal rain water is slightly acidic and its $pH$ value is $56$ because of which one of the following ?
- JEE Main - 2023
- Chemistry
- allotropes of carbon
- Amorphous allotrope of carbon is
- TS POLYCET - 2023
- Chemistry
- allotropes of carbon
- In the titration of KMnO4 and oxalic acid in acidic medium, the change in oxidation number of carbon at the end point is _____.
- JEE Main - 2022
- Chemistry
- allotropes of carbon
View More Questions
Questions Asked in JEE Main exam
- In the given circuit if the power rating of Zener diode is 10 mW, the value of series resistance Rs to regulate the input unregulated supply is :
- JEE Main - 2024
- Zener Diodes
- 0.08 kg of air is heated at constant volume through 5°C. The specific heat of air at constant volume is 0.17 kcal/kg°C and \( J = 4.18 \) joule/cal. The change in its internal energy is approximately:
- JEE Main - 2024
- Thermodynamics
- \(^{n-1}C_r = (k^2 - 8) ^{n}C_{r+1}\) if and only if:
- JEE Main - 2024
- Binomial theorem
- If in a G.P. of64terms, the sum of all the terms is 7 times the sum of the odd terms of the G.P., then the common ratio of the G.P. is equal to:
- JEE Main - 2024
- Geometric Progression
- Match List-I with List-II
\[ \begin{array}{|c|c|} \hline \text{List-I (Species)} & \text{List-II (Electronic distribution)} \\ \hline \text{(A) Cr}^{+2} & \text{(I) } 3d^8 \\ \text{(B) Mn}^{+} & \text{(II) } 3d^3 4s^1 \\ \text{(C) Ni}^{+2} & \text{(III) } 3d^4 \\ \text{(D) V}^{+} & \text{(IV) } 3d^5 4s^1 \\ \hline \end{array} \]- JEE Main - 2024
- d And f - Block Elements
View More Questions
Concepts Used:
Allotropes of Carbon
The existence of a chemical element in one or more physical forms happening in the same physical state is called Allotropes or allotropy. Allotropes may show different physical or chemical states turning on the atom arrangement or the number of existent atoms. While carbon and sulfur is the common element presenting allotropy. Carbon can make further allotropes due to its five-membered valency.
Read More: Allotropes of Carbon
Allotropes of Carbon:
Carbon is part of a p-block element.
- The atomic number of carbon = 6
- It belongs to group 14.
- It makes up about 18.5% of the human body by mass.
Carbon has only two types of allotropes, such as;
- Crystalline
- Amorphous
The crystalline form of carbon consists of allotropes like;
- Diamond
- Graphite
- Fullerenes
The amorphous form of carbon consists of allotropes like;
- Coal
- Coke
- Wood charcoal
- Animal charcoal
- Lampblack
- Gas carbon