This element reacts with hydrogen to produce a gas with the formula HX.When dissolved in water,HX forms an acidic solution.X is ________.
A)chlorine
B)calcium
C)oxygen
D)germanium
E)arsenic

Question

Quizplus · Accepted Answer

When an element reacts with hydrogen to produce a gas with the formula HX, it means that the resulting compound is an acid. In this case, when HX is dissolved in water, it forms an acidic solution. The only element in the options that fits this description is chlorine, which reacts with hydrogen to produce hydrochloric acid (HCl). When HCl is dissolved in water, it forms an acidic solution. Therefore, the answer is (A) chlorine.

This Element Reacts with Hydrogen to Produce a Gas with the Formula