Some Sodium Hydroxide Pellets Were Placed in an Erlenmeyer Flask

question 22

Multiple Choice

Some sodium hydroxide pellets were placed in an Erlenmeyer flask and dissolved in approximately 50 ml of water. This solution was then transferred to a buret. 3.00 ml of 1.0 molar nitric acid was diluted into approximately 50 ml of water in another flask. It required 22.67 ml of the sodium hydroxide solution to titrate the dilute nitric acid solution to an endpoint. What can you say about the mass of sodium hydroxide pellets initially added to the Erlenmeyer flask?

• A) more than a gram was used
• B) less than a gram was used
• C) exactly a gram was used
• D) not enough information is provided to answer the question

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Definitions:

Learned Helplessness

is a condition in which a person suffers from a sense of powerlessness, arising from persistent failure to succeed or escape from a stressful situation.

Unavoidable Shocks

An inescapable event or occurrence that causes stress or trauma, often used in the context of psychological experiments.

Self-Regulation

The ability to monitor and control one's behaviors, emotions, or thoughts, adjusting them in accordance with standards or goals.

Emotional Stability

A personality trait that involves maintaining composure and not easily getting upset or stressed.