Question

1. other than using a catalyst, how can a reaction be sped up?
2. which of the following is a carbohydrate?

a. nh₃ b. co₂ c. c₂h₄o d. c₅h₁₀o₅ e. c₃h₈o₃

Explanation:

Step1: Recall the general formula of carbohydrates

Carbohydrates generally have the formula $(CH_2O)_n$, where $n$ is a positive - integer.

Step2: Analyze each option

• Option a: $NH_3$ is ammonia, which is a compound of nitrogen and hydrogen and has no carbon - hydrogen - oxygen ratio characteristic of carbohydrates.
• Option b: $CO_2$ is carbon dioxide, which only contains carbon and oxygen and lacks hydrogen in the right ratio for carbohydrates.
• Option c: $C_2H_4O$ does not follow the $(CH_2O)_n$ formula. If we assume $n = 2$, the formula should be $C_2H_4O_2$.
• Option d: $C_5H_{10}O_5$ can be written as $(CH_2O)_5$, which follows the general formula of carbohydrates.
• Option e: $C_3H_8O_3$ does not follow the $(CH_2O)_n$ formula. If we assume $n = 3$, the formula should be $C_3H_6O_3$.

Answer:

d. $C_5H_{10}O_5$