A Buffer Contains 0

question 29

Essay

A buffer contains 0.010 mol of lactic acid (pK_a = 3.86)and 0.050 mol sodium lactate per liter of aqueous solution.
a.Calculate the pH of this buffer.
b.Calculate the pH after 5.0 mL of 0.50 M HCl is added to 1 liter of the buffer (assume the total volume will be 1005 mL).

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Sociocultural Theory

A theory of development that emphasizes the role of social interaction and cultural context in shaping cognitive development.

Proximal Development

A concept in the theory of learning which suggests that learners progress most effectively when they are guided by tasks slightly beyond their current competence.

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A Russian psychologist known for his theories on cognitive development, emphasizing the crucial role of social interaction in learning.

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The process by which a child's understanding of the world changes due to age and experience, including the development of thinking, problem-solving, and decision-making capabilities.