Join TSR now and get all your revision questions answeredSign up now

Standard SolutionCalculations Watch

    • Thread Starter
    Offline

    0
    ReputationRep:
    I'm unsure of whether these questions and answers are correct

    Calculate the amount of solute in the following:

    2a) 4.00dm^3 of 5.00mol/dm^-3 NaOH

    4.00 x 5.00 = 20mol/dm3

    2b) 1.00dm^3 of 2.50mol/dm^-3 HCl

    1.00 x 2.50 = 2.5mol/dm3

    Calculate the mass of solute in the following:

    3a) 1.00dm^3 of 0.100mol/dm^-3 NaCl
    (I was unsure of this one so I didn't do it)

    3b) 500cm^3 of 1.00mol/dm^-3 CaCl2

    500 / 1000 = 0.5dm^3

    111.1 / 0.5 = 222.2g/dm^3

    3c) 250cm^3 of 0.200mol/dm^3

    250 / 1000 = 0.25dm^3

    158 / 0.25 = 632g/dm^3
    • Community Assistant
    • Study Helper
    Offline

    3
    ReputationRep:
    (Original post by iNicole14)
    I'm unsure of whether these questions and answers are correct

    Calculate the amount of solute in the following:

    2a) 4.00dm^3 of 5.00mol/dm^-3 NaOH

    4.00 x 5.00 = 20mol/dm3

    2b) 1.00dm^3 of 2.50mol/dm^-3 HCl

    1.00 x 2.50 = 2.5mol/dm3

    Calculate the mass of solute in the following:

    3a) 1.00dm^3 of 0.100mol/dm^-3 NaCl
    (I was unsure of this one so I didn't do it)

    3b) 500cm^3 of 1.00mol/dm^-3 CaCl2

    500 / 1000 = 0.5dm^3

    111.1 / 0.5 = 222.2g/dm^3

    3c) 250cm^3 of 0.200mol/dm^3

    250 / 1000 = 0.25dm^3

    158 / 0.25 = 632g/dm^3
    I am sure that the questions are correct.

    Take care that the units are correct in the answer and correspond to the concept asked for.
 
 
 
Poll
Is GoT overrated?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.