For H₃PO₄, K_a1 = 7

question 20

Multiple Choice

For H₃PO₄, K_a1 = 7.3 × 10^-3, K_a2 = 6.2 × 10^-6, and K_a3 = 4.8 × 10^-13. A 0.10 M aqueous solution of Na₃PO₄ therefore would be ________.

• A) neutral
• B) weakly basic
• C) weakly acidic
• D) strongly acidic
• E) strongly basic

Define and distinguish between different types of contracts such as implied, quasi, void, unenforceable, executed, unilateral, and bilateral contracts.

Identify and understand the basic elements of a contract including offer, consideration, and capacity.

Explain the concept of a void contract and know the conditions under which a contract becomes void.

Differentiate between valid, voidable, and void contracts.

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