6. What is the limiting reagent when 0.50 mol of Cr and 1.0 mol of H3PO4 react according to the following chemical equation? 2Cr + 2H3PO4 → 2CrPO4 + 3H2

If 0.20 mol of CrPO4 is recovered from the reaction described above, what is the percent yield?

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.