Multichoice when a double displacement reaction takes place, one of the products must be 1. a salt 2. a gas 3. a precipitate 4. water

The correct answer is Option 1.

Explanation:

A double displacement reaction is defined as the reaction in which exchange of ions takes place. The general equation for the reaction follows:

During this reaction, one of the product formed is always a salt.

A gas is formed in a single displacement reaction and not in double displacement reaction.

A precipitate is formed in some of the double displacement reaction.

Water is formed in neutralization reaction when an acid reacts with a base to produce a salt and water.

Hence, the correct answer is Option 1.

the answer is c. nacl

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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