The equation shows the reaction of potassium with water:
2K(s)+2H2O(l)→2KOH(aq)+H2(g) 2\text{K(s)} + 2\text{H}_2\text{O(l)} \rightarrow 2\text{KOH(aq)} + \text{H}_2\text{(g)} 2K(s)+2H2O(l)→2KOH(aq)+H2(g)A sample of potassium of mass 0.351 g0.351\text{ g}0.351 g reacts with excess water.
Calculate the volume of hydrogen gas, in cm3\text{cm}^3cm3, produced at room temperature and pressure (rtp).
The volume of one mole of a gas at rtp is 24 000 cm3. Note: Ar(K)=39. \text{The volume of one mole of a gas at rtp is } 24\,000\text{ cm}^3. \text{ Note: } A_r(\text{K}) = 39. The volume of one mole of a gas at rtp is 24000 cm3. Note: Ar(K)=39.
