Put zinc particles with a mass of 18 g into 40 ml with a density of 1.29 g / cm ³ After the reaction, take out the remaining zinc particles, wash and dry them, and weigh them to 4.9 G Q: A. how many liters of hydrogen are produced? (in this case, the density of hydrogen is 0.09 g / cm ³) b. What is the percentage concentration of dilute sulfuric acid? c. What is the percentage concentration of the resulting zinc sulfate solution?

Put zinc particles with a mass of 18 g into 40 ml with a density of 1.29 g / cm ³ After the reaction, take out the remaining zinc particles, wash and dry them, and weigh them to 4.9 G Q: A. how many liters of hydrogen are produced? (in this case, the density of hydrogen is 0.09 g / cm ³) b. What is the percentage concentration of dilute sulfuric acid? c. What is the percentage concentration of the resulting zinc sulfate solution?

Zn + H2SO4 = = ZnSO4 + H2 ↑ 65 2 18G X65 / 2 = 18G / XX = 0.55g0.55g/0.09g/cm3 = 6.11ml = 0.0611l a; About 0.0611l hydrogen is produced. Let the percentage concentration of dilute sulfuric acid be x 40ml * 1.29g/cm3 = 51.6gzn + H2SO4 = = ZnSO4 + H2 ↑ 65 9818g 51.6g * X65 / 98 = 18G / 51.6g