Calcium Hydride (CaH₂) Is So Reactive with Water That It

question 92

Multiple Choice

Calcium hydride (CaH₂) is so reactive with water that it can be used to remove traces of water from solvents other than water. If 24.6 g of calcium hydride is added to a large volume of solvent that contains 14.0 g of water, which of these remains, water or calcium hydride, after the reaction is complete? The reaction is: CaH₂(s) 2H₂O(l) Ca(OH) ₂(s) 2H₂(g)

• A)CaH₂ will be left over.
• B)Water will be left over.
• C)Both will be completely consumed.
• D)There is no way to tell.

---

Definitions:

Pseudomonas Aeruginosa

A common, opportunistic bacterium that can cause diseases in plants, animals, and humans, particularly in immunocompromised individuals.

Antibiotic-Resistant

Refers to bacteria that have evolved the ability to survive exposure to antibiotics, making infections harder to treat.

Benign Bacteria

Non-pathogenic bacteria that do not cause disease and can be beneficial to their host organism.

Drug-Resistant Bacteria

Bacteria that have developed immunity to certain antibiotics, making infections harder to treat.