You are given 1 mol/dm3 sodium hydroxide, 1 mol/dm3 hydrochloric acid, phenolphthalein indicator and an unknown solution. How would you estimate the pH of the unknown solution? Draw a sketch and write a method

i'm not sure

explanation:

i'll try whatever you got

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

a corroding iron, if that's one of your choices