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chemistry

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2. Zinc metal reacts with HCL similarly to magnesium: Zn(s) + 2HCL(aq) = ZnCl2(aq) + H2(g). the H2 gas produced was collected over water at 25 degrees Celsius and had a volume of 7.80L at 0.980 atm. How many grams of Zn were consumed in the reaction? (Vapor pressure of water at 25C = 23.8mmHg)

  • chemistry - ,

    Use PV = nRT
    P = 0.980 - (23.8/760)
    V = 7.8L
    n = solve for this
    R = 0.08206
    T = 298
    1 mol H2 = 1 mol Zn
    g Zn = mols x molar mass.

  • chemistry - ,

    19.8g

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