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What is the chemical formula of baking soda? 

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Cyrielle Lorio
Cyrielle LorioLv10
7 Oct 2020
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17 Nov 2020

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Related questions

is mixing baking soda and bromothymol blue indicator a chemical reaction

Baking powder is a mixture of cream of tartar (KHC4H4O6) and baking soda (NaHCO3). When it is placed in an oven at typical baking temperatures (as part of a cake, for example), it undergoes the following reaction (CO2 makes the cake rise):

You decide to make a cake one day, and the recipe calls for baking powder. Unfortunately, you have no baking powder. You do have cream of tartar and baking soda, so you use stoichiometry to figure out how much of each to mix.

The following choices, which is the best way to make baking powder? The amounts given in the choices are in teaspoons (that is, you will use a teaspoon to measure the baking soda and cream of tartar). Justify your choice.

Assume a teaspoon of cream of tartar has the same mass as a teaspoon of baking soda.

  • Add equal amounts of baking soda and cream of tartar.
  • Add a bit more than twice as much cream of tartar as baking soda.
  • Add a bit more than twice as much baking soda as cream of tartar.
  • Add more cream of tartar than baking soda, but not quite twice as much.
  • Add more baking soda than cream of tartar, but not quite twice as much.

 

 

Baking soda is pure sodium bicarbonate, NaHCO3, which dissolves and dissociates in water into thesodium ion and the bicarbonate ion. As most students know from demonstrations in grade school or athome, it can be mixed with vinegar for a rapid and entertaining chemical reaction that generates carbondioxide gas bubbling out of the reaction mixture.

The overall reaction can be written as:CH3COOH (aq) + Na+(aq) + HCO3–(aq) → Na+(aq) + CH3COO–(aq) + H2O(l) + CO2(g) in which the sodium ion is a spectator ion.

Baking soda or baking powder can be used in recipes as a leavening agent—that is, to produce carbondioxide gas to make dough or batter rise. Recipes using baking soda must include a separate acidicingredient such as buttermilk or vinegar. Recipes that do not include the separate addition of an acidicingredient usually require baking powder instead. Baking powder has a solid organic acid mixed in withthe baking soda, so that when the mixture is dissolved, the acid and sodium bicarbonate react with eachother. While commercial baking powder involves slightly more complicated chemistry, a good substitutefor baking powder can be made by adding baking soda to an acid such as potassium hydrogen tartrate(potassium bitartrate or cream of tartar). The formula for potassium hydrogen tartrate is KH C4H4O 6 . Your task is to devise a suitable substitute for baking powder by calculating the mass of cream of tartar in grams required to react with 10.00 g of baking soda. There should be enough cream of tartar added so that all of the baking soda will react to make carbon dioxide gas, but no more cream of tartar than that.

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