Answer :
The height of a theoretical plate is usually assumed to be about 18 inches. So, 12 theoretical plates would be about 216 inches (12 x 18 = 216).
A fractionating column is used to separate different components of a mixture by fractional distillation. The height equivalent to a theoretical plate (HETP) is a measure of how efficient a particular fractionating column is. The HETP is typically measured in terms of the number of theoretical plates in a particular column. If the HETP of a column is 2 in plate, then it means that the column has two theoretical plates. To calculate the length of a fractionating column with twelve theoretical plates, we can use the formula: Length = HETP x Number of theoretical plates. In this case, the length would be 12 x 2 = 24 inches.
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