Synthesis reactions are those where multiple substrates join together to form a

Question

Synthesis reactions are those where multiple substrates join together to form a single product. Many biochemical compounds, as well as larger structures like proteins, are created through synthesis reactions. Gases X and Y are contained in a moveable piston system. They are beneath the pistons in an enclosed space. They react completely to form gas XY, and the reaction is not reversible. What movement will the pistons exhibit during the reaction? A. They will move up due to an increase in the volume of gas. B. They will move up due to the energy given off by the reaction. C. They will not move. D. They will move down due to a decrease in the volume of gas.

Explanation / Answer

According to the statement 1mole of X and 1 mole of Y reacts together to form 1 mole XY.

X + Y = XY

1 mole of any gas at STP occupies 22.4 L .

So initially volume is 44.8 L and it reduces to 22.4 L.

So answer is D .They will move down due to a decrease in the volume of gas.

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