Concept explainers
Baking powder is a mixture of cream of tartar
msp;
u decide to make a cake one clay, 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.
sume a teaspoon of cream of tartar has the same mass as a teaspoon of baking soda.
l type='a'>
i>Add a bit more than twice as much cream of tartar as baking soda.
i>Add a hit more than twice as much baking soda as cream of tartar.
i>Add more cream of tartar than baking soda, hut not quite twice as much.
i>Add more baking soda than cream of tartar, hut not quite twice as much.
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Chapter 9 Solutions
Introductory Chemistry: A Foundation
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- A 4.72-g sample of methanol (CH3OH) was placed in an otherwise empty 1.00-L flask and heated to 250.C to vaporize the methanol. Over time, the methanol vapor decomposed by the following reaction: CH3OH(g)CO(g)+2H2(g) After the system has reached equilibrium, a tiny hole is drilled in the side of the flask allowing gaseous compounds to effuse out of the flask. Measurements of the effusing gas show that it contains 33.0 times as much H2(g) as CH3OH(g). Calculate K for this reaction at 250.C.arrow_forwardAccording to the Resource Conservation and Recovery Act (RCRA), waste material is classified as toxic and must be handled as hazardous if the lead concentration exceeds 5 mg/L. By adding chloride ion, the lead ion will precipitate as PbCl2, which can be separated from the liquid portion. Once the lead has been removed, the rest of the waste can be sent to a conventional waste treatment facility. How many grams of sodium chloride must be added to 500 L of a waste solution to reduce the concentration of the Pb2+ ion from 10 to 5 mg/L?arrow_forwardConsider the equilibrium process depicted in Fig. 17.6. When does the equilibrium state occur?arrow_forward
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