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1. How would you approach this question?

Which of the following contains the most chloride ions?
[1 mark]
A 10 cm3 of 3.30 × 10–2 mol dm–3 aluminium chloride solution
B 20 cm3 of 5.00 × 10–2 mol dm–3 calcium chloride solution
C 30 cm3 of 3.30 × 10–2 mol dm–3 hydrochloric acid
D 40 cm3 of 2.50 × 10–2 mol dm–3 sodium chloride solution
2. Work out the moles of each using n=cv - making sure all of your values are in their SI units.
3. (Original post by Jariana)
How would you approach this question?

Which of the following contains the most chloride ions?
[1 mark]
A 10 cm3 of 3.30 × 10–2 mol dm–3 aluminium chloride solution
B 20 cm3 of 5.00 × 10–2 mol dm–3 calcium chloride solution
C 30 cm3 of 3.30 × 10–2 mol dm–3 hydrochloric acid
D 40 cm3 of 2.50 × 10–2 mol dm–3 sodium chloride solution
Use moles = concentration x volume and the highest moles is the answer.

Remember to convert cm3 to dm3 before..
4. The answer is B based on the mark scheme, but i am confused as B and C both equal 100??

Someone please explain this to me?
5. (Original post by fdtyyyyyyyyyy)
The answer is B based on the mark scheme, but i am confused as B and C both equal 100??

Someone please explain this to me?
Look at the formulas of both those compounds. See if theres something different about the number of chlorine atoms
6. (Original post by xXx-Mr-Today-xXx)
Look at the formulas of both those compounds. See if theres something different about the number of chlorine atoms
ohhhh, haha thankyou! I understand now
7. help

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