What Is the Freezing Point (°C)of a Solution Prepared by Dissolving

question 144

Multiple Choice

What is the freezing point (°C) of a solution prepared by dissolving 11.3 g of Ca(NO₃) ₂ (formula weight = 164 g/mol) in 115 g of water? The molal freezing point depression constant for water is 1.86 °C/m.

• A)-3.34
• B)-1.11
• C)3.34
• D)1.11
• E)0.00

---

Definitions:

Hypotheses

Proposed explanations or predictions that can be tested through research and experimentation.

Null Hypotheses

A hypothesis that suggests no significant difference or effect, typically representing a default or initial assumption for statistical testing.

Alternative Hypotheses

The hypothesis that suggests there is a statistically significant difference between two or more sets of data, contrasted against the null hypothesis.

Significance Level

In hypothesis testing, it represents the probability of rejecting the null hypothesis when it is actually true, typically set before the data analysis.