Ask Experts Questions for FREE Help !
    SlyPhoenix's Avatar
    SlyPhoenix Posts: 63, Reputation: 2
    Junior Member

    Apr 22, 2009, 10:59 AM
    For every mole of Pb+2 ions that are formed, how many moles of Cl- ions are formed?
    PbCl2(s) = Pb+2(aq) + 2Cl -(aq).

    For every mole of Pb+2 ions that are formed, how many moles of Cl- ions are formed?

    I know the Atomic weight is 35.45 but how do you change grams to moles?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member

    Apr 22, 2009, 11:08 AM

    Though the reaction you mentioned is quite strange, for PbCl2 is a solid that is insoluble in water... cold water I mean.

    Ok, have a look at your equation. The number put in front of each formula indicates the number of moles of that particular substance.
    If there is nothing, meaning 1, there is one mole. If there is a 2, there are 2 moles! And so on...

    Ok, for the conversion from grams to moles, you have to know that one mole of a substance has a mass equal to it's relative atomic, molecular or formula mass and add the units grams (g) after that.

    Take hydrogen gas, H2 (relative atomic mass of H=1)
    Relative molecular mass of H2= 2x1 = 2
    One mole of H2 will therefore have a mass of 2g

    Understood? :)

Not your question? Ask your question View similar questions


Question Tools Search this Question
Search this Question:

Advanced Search

Check out some similar questions!

Product formed when SO3^2- is oxidized? [ 1 Answers ]

What is the usual product formed when SO3^2- is oxidized? Thanks

Ice formed in Kelvinator refrigerator [ 7 Answers ]

Hi there. I have a Kelvinator fridge (model N369B) which has a separate freezer at the bottom. The freezer works fines but the fridge forms ice in the inside at the back of the fridge near the cold metal plate (condensor plate). Would you show me how to repair the ice forming? Thanks, Adam

Why is there frost/ice formed on inside of drywall! [ 2 Answers ]

Just moved into a new house a few months ago... (4 level split with 3rd level on a concrete slab). On the 3rd level in the corner of our family room there was ice on the drywall (very cold out -45 with wind chill). Was wondering if possibly vapour barrier was not installed correctly because I...

View more questions Search