Question

3. An unknown acid sample weighing 0.332 g was dissolved in water and then titrated with 0.08321 N NaOH. The initial buret reading for the NaOH was 0.15 mL and the final buret reading at the endpoint was 34.30 mL. What is the equivalent weight of the unknown acid?

Answer 1

Answer:

The negation of p ∧ q asserts “it is not the case that p and q are both true”. Thus, ¬(p ∧ q) is true exactly when one or both of p and q is false, that is, when ¬p ∨ ¬q is true. Similarly, ¬(p ∨ q) can be seen to the same as ¬p ∧ ¬q. Our reasoning can be checked on the truth tables below