For H₃PO₄, K_a1 = 7

question 131

Multiple Choice

For H₃PO₄, K_a1 = 7.3 * 10^-3, K_a2 = 6.2 * 10^-6, and K_a3 = 4.8 * 10^-13. An aqueous solution of Na₃PO₄ therefore would be

• A) neutral.
• B) basic.
• C) acidic.

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Definitions:

Number

A mathematical object used to count, measure, and label; fundamental in mathematics and used in counting, ordering, and measuring.

Direct Materials Quantity Variance

The difference between the actual quantity of materials used and the standard quantity expected to be used, multiplied by the standard price per unit.

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The ongoing expenses of operating a business that are not directly associated with the production of goods or services.

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