Tag: substances in common use

Questions Related to substances in common use

RCOOH decomposes $NaHCO 3$ to liberate $ CO _2$ which comes from_____:

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. $NaOHCO _{3}$

  2. $NaHCO _{3}$

  3. $NaHCO _{2}$

  4. $NaHCO$

Show answer
Correct Option: B
Explanation:

RCOOH decomposes $NaHCO _3$ to liberate $CO _2 $ which comes from $NaHCO _3$.
$NaHCO _3 + RCOOH \rightarrow RCOONa + H _2O + CO _2$

$NaHCO _3$ represent the formula of which one of the following? 

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. Sodium carbonate

  2. Baking soda

  3. Sodium acetate

  4. Washing soda

Show answer
Correct Option: B
Explanation:

${ NaHCO } _{ 3 }$ is sodium bicarbonate or known as sodium hydrogen carbonate. Sodium bicarbonate is a white solid that appears as fine powder. It has a slightly salty, alkaline taste resembling that of sodium carbonate(washing soda). It is also known as baking soda or cooking soda. 

The balanced equations for : "Carbon dioxide is passed through a concentrated aqueous solution of sodium chloride saturated with ammonia".

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. $NaCl + NH _4OH + CO _2\rightarrow NH _4Cl +NaHCO _3$

  2. $2NaCl + NH _4OH + CO _2\rightarrow NH _4Cl +2NaHCO _3$

  3. $NaCl + NH _4OH + CO _2\rightarrow NH _4CO +NaHCl _3$

  4. $NaCl + NH _4OH + CO _2\rightarrow NH _3 +NaCl+H _2CO _3$

Show answer
Correct Option: A
Explanation:

$NaCl + NH _4OH + CO _2\rightarrow NH _4Cl +NaHCO _3$ 

Sodium bicarbonate is formed. This reaction is used in the Solvay process for the manufacture of sodium carbonate.

A milkman adds a very small amount of baking soda to fresh milk. The pH will :

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. increase

  2. decrease

  3. same as milk

  4. none of these

Show answer
Correct Option: A
Explanation:

Baking soda is mild base, so when it is added to milk the pH of the milk slightly increases towords basic value.

Baking powder contains baking soda and : 

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. potassium hydrogen tartarate

  2. calcium bicarbonate

  3. sodium carbonate

  4. vinegar

Show answer
Correct Option: A
Explanation:

Baking powder is dry chemical leavening agent a mixture of carbonate or bicarbonate and a weak acid. A typical acid in such formulations is cream of tartar derivative of tartaric acid. Commercially it is sodium bicarbonate.

Sodium sesquicarbonate is 

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. $\displaystyle Na _{2}CO _{3}NaHCO _{3}$

  2. a double salt

  3. trisodium hydrogen discrabonate

  4. water softner

Show answer
Correct Option: A,B,C,D
Explanation:
Sodium sesquicarbonate (Systematic name trisodium hydrogendicarbonate) $Na _3H(CO _3) _2$ is a double salt of sodium bicarbonate and sodium carbonate($\displaystyle Na _{2}CO _{3}NaHCO _{3}$), and has a needle-like crystal structure. However, the term is also applied to an equimolar mixture of those two salts, with whatever water of hydration the sodium carbonate includes, supplied as a powder.
odium sesquicarbonate is used in bath salts, swimming pools, as an alkalinity source for water treatment.
Hence options A,B,C & D are correct.

The element which is not common between the compounds called baking soda and soda ash is:

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. nitrogen

  2. hydrogen

  3. oxygen

  4. sulphur

Show answer
Correct Option: B
Explanation:

Baking soda formula is $NaHCO _3$.

Soda ash formula is $Na _2CO _3$.
So, hydrogen atom $(H)$ is not common between the compounds of baking soda and soda ash.
So, the answer is $B$.

Baking soda is a/an:

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. acidic substance

  2. basic substance

  3. neutral substance

  4. none of these

Show answer
Correct Option: B
Explanation:

Baking soda is sodium bicarbonate or sodium hydrogen carbonate. It has slightly salty, alkaline taste resembling that of washing soda. Its alkalinity in aqueous solution is because of formation of carbonic acid and hydroxide ion.
${ HCO } _{ 3 }^{ - }+{ H } _{ 2 }O\rightarrow { H } _{ 2 }{ CO } _{ 3 }+{ OH }^{ - }$

One of the constituents of baking powder is sodium hydrogen carbonate, the other constituent is:

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. acetic acid

  2. oxalic acid

  3. carbonic acid

  4. tartaric acid

Show answer
Correct Option: D
Explanation:

Tartaric acid used in baking powder where it serves as the source of acid that reacts with baking soda. This reaction produces carbon dioxide gas and lets products rise using active yeast cultures as a source of carbon dioxide gas.

Baking powder contains Sodium Hydrogen Carbonate, and__________.

chemistry substances in common use preparation, properties and uses of baking soda chemical from common salt compounds of carbon

  1. tartaric acid

  2. sodium carbonate

  3. calcium chloride

  4. acetic acid

Show answer
Correct Option: A
Explanation:
Baking powder contains Sodium Hydrogen Carbonate $NaHCO _3$, and tartaric acid. It is used for increasing the volume and lightening the texture of baked goods. It releases carbon dioxide gas into a batter or dough through an acid-base reaction, causes bubbles in the wet mixture which expands and thereby  leavening the mixture.