(A) Write a net ionic equation to represent the reaction of aqueous ammonia with propionic acid, CH₃CH₂COOH. Assume that the neutralization reaction goes to completion. What is the formula of the salt that results from this neutralization?

(B) Calcium carbonate is a major constituent of the hard water deposits found in teakettles and automatic coffee makers. Vinegar, which is essentially a dilute aqueous solution of acetic acid, is commonly used to remove such deposits. Write a net ionic equation for the reaction that occurs. Assume that the neutralization reaction goes to completion.