Solve the Problem $$\mathrm { pH } = - \log \left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right]$$

question 52

Multiple Choice

Solve the problem. Round your answer to the nearest tenth, when appropriate. Use the formula $$\mathrm { pH } = - \log \left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right]$$ as needed.
-Find the $\left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right]$ if the $\mathrm { pH } = 2.3$ .

• A) \(2.7 \times 10 ^ { 1 }\)
• B) \(3.6 \times 10 ^ { - 1 }\)
• C) \(5.0 \times 10 ^ { - 3 }\)
• D) \(2.0 \times 10 ^ { 2 }\)

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Definitions:

Compound Interest

Calculating interest that includes both the original principal amount and all previously accumulated interest on a loan or deposit.

Simple Interest

The method of calculating interest charges based on the principal amount only, not compounding on accumulated interest.

Deposit

A sum of money placed into a bank account or given as security for a contractual obligation.

Ordinary Annuities

Fixed payments received or paid out over a designated series of periods where the payments occur at the end of each period.