CBSE > Class 11 > Chemistry | CBSE Board | Homework Help

The Solvay process is used for the manufacture sodium carbonate Na2CO3 (washing soda). In this process, brine (NaCl), NH3 and CO2 are the raw materials. The steps involved in this process are: 1. Purification of saturated brine 2. Reaction of saturated brine with gaseous ammonia 3. The ammoniated brine is carbonated with CO2 to form NaHCO3 4. NaHCO3 is insoluble in brine solution. so it can be filtered out. 5. On heating, NaHCO3 decomposes to Na2CO3 6. CaCO3 is also used to provide CO2.

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Why the water is in the liquid form but not in the solid form explain it

Posted by Devendra Saropiya 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Prakhar J 6 years, 11 months ago

Hydrogen bonding........?

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Akanksha Kumari? 6 years, 11 months ago

Because in water molecules are loosely packed and at normal room temperature it exist in liquid form

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N2 B2 O7 find hybridization of N and B

Posted by Ritik Chauhan 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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inert pair effect kya hain??

Posted by Jyoti Deka 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Prakhar J 6 years, 11 months ago

Inert pair effect is mostly shown by the 15-17th group elements. That is, the oxidation state reduces by 2 for elements down the group, which is more stable than the other oxidation states. The reason for this is the inertness of the inner electrons due to poor shielding............??

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What is crystel radius.??

Posted by Tripti Shah 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Prakhar J 6 years, 11 months ago

It is the radius of an atom's ion in ionic crystal structure....?

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Difine wavelength 'frequency. Velocity wave number amplitude

Posted by Vikash Choudhary 6 years, 11 months ago

CBSE > Class 11 > Chemistry

3 answers

Prakhar J 6 years, 11 months ago

The amplitude of a wave is a measure of the displacement of the wave from its rest position.

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Prakhar J 6 years, 11 months ago

Wavenumber - no. Of wavelengths per unit length. Wavenumber equals to reciprocal of wavelength.

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Prakhar J 6 years, 11 months ago

the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats. It is thus the inverse of the frequency.

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Why H3BO3 is an acid

Posted by Dhrub Kumar 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Patel Salahuddin 6 years, 11 months ago

Because when it is heated with water than it remove h+ of water

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Prakhar J 6 years, 11 months ago

Boric acid ( H3BO3) or B(OH)3. This is because boric acid does not act as proton donor rather it accepts a lone pair of electrons from OH- ions. There by acting as monobasic lewis acid.

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IUPAC NAMES OF CH3-CH2-CH(OH)-CH2-CH2-CH(CH3)-CH2-CH3

Posted by Venu Madhav 6 years, 11 months ago

CBSE > Class 11 > Chemistry

7 answers

Patel Salahuddin 6 years, 11 months ago

6-Methyleoctane3-ol

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Akanksha Kumari? 6 years, 11 months ago

Sorry it's 6 methyl octan-3 ol

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Akanksha Kumari? 6 years, 11 months ago

66 methyl octan-3ol

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Aditi Shourya 6 years, 11 months ago

6-Methyl-3-octanol

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Rohan Pant 6 years, 11 months ago

6-methyl octan-3-ol

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Harshit Maurya 6 years, 11 months ago

6-Methyloctan-3-ol

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Venu Madhav 5 years, 8 months ago

Water

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What are metamers?

Posted by Shreya S 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

[email protected] M 6 years, 11 months ago

Compounds having the same molecular formula but different number of carbon atoms ( alkyl groups) on either side of functional group are called metamers

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What are reducing character?

Posted by Asif Masir 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Prakhar J 6 years, 11 months ago

Those which decrease the oxidation state of central atom of the compound.

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50 ml of 2N acetic acid mixed with 10 ml of 1N sodium acetate solution will have an approximately ph of (pka=10to the power -5)

Posted by Saba Elias 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Pka of NH4OH at certain temperature is 4.74 the pH of basic buffer containing equimolar concentration of NH4OH AND NH4CL will be

Posted by Saba Elias 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Gaurav Seth 6 years, 11 months ago

Answer is 9.26

Explanation :

The above solution is an example of basic buffer

Now, concentration of NH₄Cl = Cocentration of NH₄OH

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Ka for HCN is 5× 10 to the power -10 at 25°C for maintaining a constant PH of 9 the volume of 5M KCN solution required to be added to 10ml of 2M HCN solution is

Posted by Saba Elias 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

To a 50 ml of formic acid how much volume of 0.10 M sodium formate must be added to get a vuffer solution of ph=4?(pka of the acid=3.8)

Posted by Saba Elias 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Vinay Gautam 6 years, 11 months ago

Hey gourav plz tell me how to upload pics on this app

2Thank You

Gaurav Seth 6 years, 11 months ago

The Answer for given query is 39.6 ml

Explanation:

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ANSWER

Under what condition will a reaction be spontaneous if delta h and delta s both are negative

Posted by Green Shadow 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Aasta Chouhan 6 years, 11 months ago

Delta g is positive

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Balence the redox reaction using oxidation number method SO2 + H2S------>S+H2O

Posted by Famsi Isk 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is the formula of Boyle's law

Posted by Punit Jangir 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Ayushi Ayushi 6 years, 11 months ago

Boyle’s law At constant temperature, the volume of a given mass of a gas is inversely proportional to its pressure............................. PV = K= Constant P1V1 = P2V2 = K (T = Constant)

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What is Lechatelier's principle

Posted by Sonu Mardi 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Aditi Shourya 6 years, 11 months ago

It states that when a change is made in any of the factors that determines the equilibrium conditions of a system will cause a system to change in such a way so as to reduce or conteract the effect of the change

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Ayushi Ayushi 6 years, 11 months ago

Le Chatelier's principle states that when a system in chemical equilibrium is disturbed by a change of temperature, pressure, or a concentration, the system shifts in equilibrium composition in a way that tends to counteract this change of variable.

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How to Write IUPAC name of (CH3)3-C-CH2-C-(CH3)3 ?

Posted by Manojit Bhagat 6 years, 11 months ago

CBSE > Class 11 > Chemistry

4 answers

Patel Salahuddin 6 years, 11 months ago

2,2,4,4-tetramethylpentane

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Aditi Shourya 6 years, 11 months ago

2,2,4,4-tetramethylpentane

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Vikrant Singh 6 years, 11 months ago

2,2,4 tetrapentane

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Pragati Gola 6 years, 11 months ago

2,2,4,4-Tertrapentane

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ANSWER

Difference between quick lime, slaked lime and lime water

Posted by Akshita Kulshrestha 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Manojit Bhagat 6 years, 11 months ago

A white caustic alkaline substance consisting of calcium oxide, which is obtained by heating limestone and which combines with water with the production of much heat; lime. Slaked lime is chemically calcium hydroxide, and its chemical formula is Ca(OH)2. It is a white coloured solid which is obtained when water is added to calcium oxide (CaO). Lime water on the other hand is a saturated solution of slaked lime in water.

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Why do trihalides of group 13 elements fume in moist air???

Posted by ?????Geetanjali???? ? 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Hydrogen atoms of ethyne are acidic in nature,why?

Posted by Manpreet Singh 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Naitik Tayal 6 years, 11 months ago

Because in ethyne there is 50℅ s character so carbon atom attach to triple bond is most electronegative from alkane and alkene So b/w the CH bond polarity is created and Hpositive is obtained which is acidic in nature

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Why is molecule of helium (He2) not formed???

Posted by ?????Geetanjali???? ? 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Naitik Tayal 6 years, 11 months ago

Because in the formation of HE2 molecule repulsive force between the atoms is dominant over attractive force

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Prakhar J 6 years, 11 months ago

Since , single molecule of He has complete its duplet and become inert.And we know that inert gases donot react. So formation of He ^2 is not possible. Also if you want to confirm mathematically you may find the bond order. If it comes zero, it wont exist....,......,...,........????

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What is disproportionation reactions

Posted by Sonu Mardi 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

😜Arnav Arya🙃 6 years, 11 months ago

Type of redox reaction in which same species get oxidised and reduced simultaneously to form at least two dissimilar products .

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😜Arnav Arya🙃 6 years, 11 months ago

Reaction in which get oxidised and reduced

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Why after hydrolysis one atom has a sextet electronic structure and a positive charge

Posted by Mohit Kumar 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What it means:- " LiCl is deliquescent and crystallises as a hydrate, LiCl.2H2O" plz help me

Posted by Yakshi Baliyan 6 years, 11 months ago

CBSE > Class 11 > Chemistry

3 answers

Patel Salahuddin 6 years, 11 months ago

Deliquescent ka matlab jo asani se atmosphere ke water ke sath react karle

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Mayank Singh 6 years, 11 months ago

Deliquescent means presence of water

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Ravi Raj 6 years, 11 months ago

Deliquescent k to pata nhi but licl me lithium ke small size ki wajah se lithium ki hydration enthalpy jyada hoti hai so uske sare salts hydrated hote hai

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What is oxidation no.

Posted by Sonu Mardi 6 years, 11 months ago

CBSE > Class 11 > Chemistry