What Is the PH of a Solution Prepared by Mixing

question 148

Multiple Choice

What is the pH of a solution prepared by mixing 100. mL of 0.0500 M HCl with 300. mL of 0.500 M HF? [K_a(HF) = 7.1 * 10^-4]

• A) 1.47
• B) 1.90
• C) 1.30
• D) 1.63
• E) 2.82

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Definitions:

Holt's Model

Holt's Model is a forecasting technique that extends exponential smoothing to capture both level and trend in historical data, useful in predicting future values.

Holt's Model

A forecasting technique that extends exponential smoothing to allow forecasting of data with a trend.

Trend Component

An underlying pattern in data that shows a persistent, general direction of movement over time.

Simple Exponential Smoothing

A time series forecasting method for univariate data that applies decreasing weights to past observations as they age.