The ionic product of water, Kw=9.31×10−14 mol2 dm−6K_w = 9.31 \times 10^{-14}\text{ mol}^2\text{ dm}^{-6}Kw=9.31×10−14 mol2 dm−6 at 60 ∘C60\ ^\circ\text{C}60 ∘C.
Which is the correct expression for KwK_wKw?
Calculate the pH of pure water at 60 ∘C60\ ^\circ\text{C}60 ∘C. Give your answer to two decimal places.
Suggest why this pure water at 60 ∘C60\ ^\circ\text{C}60 ∘C is neutral.
Calculate the pH of a 0.0220 mol dm−30.0220\text{ mol dm}^{-3}0.0220 mol dm−3 solution of barium hydroxide at 60 ∘C60\ ^\circ\text{C}60 ∘C. Give your answer to two decimal places.
The 0.0220 mol dm−30.0220\text{ mol dm}^{-3}0.0220 mol dm−3 barium hydroxide solution at 60 ∘C60\ ^\circ\text{C}60 ∘C was a saturated solution. A student added 0.0220 mol0.0220\text{ mol}0.0220 mol of strontium hydroxide to 1.00 dm31.00\text{ dm}^31.00 dm3 of water at 60 ∘C60\ ^\circ\text{C}60 ∘C and stirred the mixture until no more solid dissolved. Predict whether the pH of this strontium hydroxide mixture is larger than, smaller than, or the same as the pH of the barium hydroxide solution. Explain your answer.
