solid sodium reacts violently with water producing heat, hydrogen gas and sodium hydroxide. How many molecules of hydrogen gas are produced when 65.4g of sodium are added to water? 2Na(s)+ 2H2O(l) -->. 2NaOH(aq) + H2(g). Can someone please explain this question and it's answer to me?
From the equation of the reaction,2 moles of sodium and water produced one mole of hydrogen gas.what you are asked to find is the moles of hydrogen.....d mole ratio of na and hydrogen is 2 and 1.so sodium all over hydrogen=2 all over 1(d mole ratio).recall,mole=mass÷molar mass....find d mole of sodium first using this formular above,and of hydrigen,but hydrogen dnt av mass (what we r looking for here is mass of hydrogen. Use the formula above to substitute yr moles of sodium and hydrogen (mass of hydrogen all over two).after getting the mass of hydrigen,use d normal formula....moles=mass/molar mass by substituting ur mass of hydrogen nd molarmass.your final answer will 1.422 moles or molecules of hydrigen.after u get d moles of hydrogen... Use d formula... Moles=no of atoms/avogadro constant.what u get is ur number of molecules(atoms=molecules).
Sure! Let's break down the question and its answer step by step.
The given equation is 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g), which represents the reaction between solid sodium (Na) and water (H2O) to produce sodium hydroxide (NaOH) and hydrogen gas (H2).
To solve the question, we need to find the number of molecules of hydrogen gas produced when 65.4g of sodium reacts with water.
Here's the step-by-step process to calculate the number of hydrogen gas molecules produced:
1. Convert the given mass of sodium (65.4g) into the number of moles using the molar mass of sodium. The molar mass of sodium (Na) is approximately 22.99 g/mol.
Number of moles of sodium = Mass of sodium / Molar mass of sodium
Number of moles of sodium = 65.4g / 22.99 g/mol
2. Use the balanced equation to find the mole ratio between sodium and hydrogen gas. From the balanced equation, we can see that 2 moles of sodium react to produce 1 mole of hydrogen gas.
3. Convert the number of moles of sodium into moles of hydrogen gas using the mole ratio.
Number of moles of hydrogen gas = Number of moles of sodium × (1 mole of hydrogen gas / 2 moles of sodium)
4. Finally, use Avogadro's number (6.022 × 10^23 molecules/mol) to convert the moles of hydrogen gas into the number of hydrogen gas molecules.
Number of molecules of hydrogen gas = Number of moles of hydrogen gas × Avogadro's number
By following these steps, you can calculate the number of molecules of hydrogen gas produced when 65.4g of sodium reacts with water.
Note: If you provide the actual value calculated using the steps above, I can help you with the final answer.