When Room Temperature Solutions of Vinegar and Drain Cleaner Are

question 34

Multiple Choice

When room temperature solutions of vinegar and drain cleaner are combined,the temperature of the resulting solution is greater than room temperature.Which of the following is the best explanation for this apparent violation of the Law of Conservation of Energy?

• A)Some of the mass of the room temperature solutions is converted into heat energy
• B)The total energy of the original solutions is equal to the total energy of the resulting solution plus the heat energy
• C)An ordinary chemical reaction occurs, so the Law of Conservation of Energy does not apply
• D)The thermometer used to measure the temperature of the solutions must be faulty
• E)The Law of Conservation of Energy does not apply to heat energy

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Definitions:

Equation

A statement in mathematics that declares two expressions, often including variables and constants, to be equivalent.

Factor

A number or expression that divides another number or expression evenly, with no remainder.

Zero-Factor Property

The rule stating if a product of two or more factors is zero, at least one of the factors must be zero.

Equation

A pronouncement in mathematics asserting the equivalence of two expressions.