Devising new food recipes is more successful when the chefs understand basic food chemistry. For example, to create a new cake recipe, one must understand the role of both acids and bases in leavening (rising, or trapping of tiny gas bubbles as dough is baking, to provide the characteristic texture). The principle is to incorporate baking soda (NaHCO3) into an acidic batter, causing a chemical
reaction resulting in gas production. Looking at the chemical formula, what gas do you think is formed? Summarize the chemical reaction that occurs in a cake batter that contains NaHCO3 and vinegar or acetic acid (produces acetate when ionized: CH3COO- + H+). What would happen to your cake if you didn't use enough baking soda? What would happen if you forgot to acidify your batter with vinegar or a similar food acid?
What will be an ideal response?
CO2 gas is formed.
NaHCO3 + CH3COO- + H+? Na++ CH3COO- + CO2 + H2O.
Less gas would be produced, so the cake wouldn't rise normally. The chemical reaction would not occur, so the
cake wouldn't rise.
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What will be an ideal response?
Which of the following is an endpoint on the pH scale?
A. Left: High H+ and low OH- B. Right: High H+ and low OH- C. Left: Basic D. Right: Neutral
Bea takes out a life insurance policy with Vida Insurance Corporation that names her spouse Wendell as the beneficiary. This is
a. a delegation. b. an assignment. c. a third party incidental beneficiary contract. d. a third party intended beneficiary contract.
Situational exercises are referred to as low-fidelity simulations because...
A. The level of realism is high B. Applicants are presented with only a description of the work problem C. Applicants are asked to perform a representative sample of the work done on the job D. There is only one correct answer the interviewer will accept