An alloy contains copper and zinc. Some of the zinc has become oxidised to zinc oxide.
what is the result of adding an excess of dilute sulfuric acid to the alloy
A a blue solution and a while solid remains.
B A colourless solution and a pink/brown solid remains.
C the alloy dissolves completely to give a blue solution.
D the alloy dissolves completely to give a colour less solution.

can you attach a picture of the lettuce? : )

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.