Background information:
Due to the widespread use of sodium bicarbonate (commonly called baking soda) in many food products, the thermal decomposition reaction has been studied extensively by food chemists. Baking soda is used to prepare cakes in order to insure that cakes “rise” as they bake. As the temperature of the cake batter reaches approximately 50oC, the baking soda decomposes and carbon dioxide is released. The use of baking soda is especially popular in pancakes and waffles since the high cooking temperatures of 350-450oF (175-230oC) cause the carbon dioxide to be liberated before the dough has set. Thus, the batter rises before it sets, and we get a light and tasty finished product.
NaHCO3, baking soda, breaks down to form sodium carbonate (solid), water (liquid), and carbon dioxide (gas). The unbalanced reaction is written below:
NaHCO3(s) --> Na2CO3 (s) + H2O (g) + CO2 (g)
Problem #1:
In order to proceed through this task – you need to balance the equation of the decomposition of baking soda.
Write your balanced equation.
Problem #2:
You need to determine how much baking soda you will need to start with in order to produce 2.50 grams of sodium carbonate. Show all of your work – neat and organized please.
Problem #3:
When this reaction was completed in a lab – only 2.25 grams of sodium carbonate was actually produced. What was the percent yield? Be sure to label the actual and theoretical yields. Show all of your work – neat and organized please.
I'm having issues with problem 2 and 3. any help is appreciated i need to turn this in or i fail
1 answer
1 answer