Use a graduated cylinder that can hold up to 100 ml of a gas. Hydrogen gas will be generated by the reaction of magnesium in hydrochloric acid
Mg + 2HCl -> MgCl + H2
Question 1
Assuming HCl is in excess, does that put a constraint on the mass of magnesium that you will use in the experiment? explain your answer without any calculations.
Question 2
Why should you wait a few minutes after the reaction to record the temperature of the gas?
Empirical gas laws problem?求教
2013-10-13 12:35 pm
回答 (1)
2013-10-14 10:06 am
✔ 最佳答案
Assuming HCl is in excess, does that put a constraint on the mass of magnesium that you will use in the experiment? explain your answer without any calculations. Yes, since the graduated cylinder can only hold 100 ml gas.
Why should you wait a few minutes after the reaction to record the temperature of the gas?
Wait for thermal equilibrium within the gas.
2013-10-16 00:44:34 補充：
Mg + 2HCl -> MgCl + H2
小心 formula ，沒有 MgCl 的，應該是 MgCl₂
收錄日期: 2021-04-27 20:40:04
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