A student adds 0.50 moles of NaOH to a 1.0 L solution containing 1.0MNH₃ and 1.0 NH₄Cl, assuming no volume changes what would the pH of the solution be? (Kᵦₙₕ₃=1.8×10⁻⁵) a. 8.77 b. more information is required to answer the question c. 9.73 d. 9.25