The PH of a Solution Is Given by the Formula $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right] , \text {where } \left[ \mathrm { H } ^ { + } \right]$

question 234

Multiple Choice

The pH of a solution is given by the formula $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right] , \text {where } \left[ \mathrm { H } ^ { + } \right]$ is the concentration of hydrogen ions in moles
per liter in the solution. Use this formula to
-The pH value of a substance is 5.42 . Find the hydrogen-ion concentration for this substance.

• A) 0.2
• B) 263,026.8
• C) 1.7
• D) 0.0000038

---

Definitions:

#define Statement

A preprocessor directive used in C/C++ for macro definition to create symbolic constants or to perform macro substitution.

Typedef

A keyword in C and C++ for defining new names (aliases) for existing data types, enhancing code readability and maintainability.

Pre-ANSI C

The version of the C programming language that existed before the standardization by the American National Standards Institute (ANSI), notable for variation in implementation between compilers.

C/C++ Compiler

A C/C++ compiler is a software tool that converts source code written in C or C++ into machine code that a computer's processor can execute.