Question

You are given Aluminum oxide, Hydrochloric acid and Zinc metal. Using these chemicals how would u prepare hydrogen gas ,How do you show that Aluminum oxide is an Amphoteric oxide​

Answer 1

Answer:

Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g)

The product gas, H2, is collected over water at a temperature of 20 °C and a pressure of 750 mm Hg. If the wet H2 gas formed occupies a volume of 9.18 L, the number of grams of H2 formed is  g. The vapor pressure of water is 17.5mm Hg at 20 °C.

2) Sodium metal reacts with water to produce hydrogen gas according to the following equation:

2Na(s) + 2H2O(l) 2NaOH(aq) + H2(g)

The product gas, H2, is collected over water at a temperature of 20 °C and a pressure of 746 mm Hg. If the wet H2 gas formed occupies a volume of 6.33 L, the number of grams of H2 formed is  g. The vapor pressure of water is 17.5mm Hg at 20 °C.