An Aqueous Solution of Boric Acid Can Be Represented by the Equilibrium

question 67

Multiple Choice

An aqueous solution of boric acid can be represented by the equilibrium system: B(OH) ₃(aq) + 2 H₂O(l) ⇌ H₃O+(aq) + B(OH) ₄^-(aq)   [Ka = 5.6 × 10^-10]
What is the pH of an eyewash solution which is 0.0018 M in boric acid?

• A) 3.75
• B) 4.75
• C) 6.00
• D) 7.49
• E) 9.25

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Definitions:

NPV Method

A method of evaluating investments by calculating the Net Present Value of the project's cash inflows and outflows discounted at the investment's cost of capital.

Discount Rate

The rate utilized in the process of calculating the present value of a financial instrument's future cash flows by discounting them.

Accept Decision

In decision-making, particularly in business, the choice to proceed with a particular action or proposal based on analysis or criteria satisfaction.

Payback Method

An investment appraisal technique that calculates the time required to recoup the cost of an investment.