alevel chemistry
Calculate the pH of the solution formed after 50.0 cm3 of 0.0108 mol dm−3 aqueous sodium hydroxide are added to beaker B.
Give your answer to 2 decimal places.
[the previous moles was 8.3x10-3]
can someone help me the mark scheme to get 3 marks is Excess mol H+ = 7.10 × 10-4
but how my method was
50/1000 x 0.0108=5.4x10-3
then I did 8.3x10-3-5.4x10-3=2.9x10-3
then I do 2.9x10-3/150/100 but its wrong
Give your answer to 2 decimal places.
[the previous moles was 8.3x10-3]
can someone help me the mark scheme to get 3 marks is Excess mol H+ = 7.10 × 10-4
but how my method was
50/1000 x 0.0108=5.4x10-3
then I did 8.3x10-3-5.4x10-3=2.9x10-3
then I do 2.9x10-3/150/100 but its wrong
Original post by angelina avalina
Calculate the pH of the solution formed after 50.0 cm3 of 0.0108 mol dm−3 aqueous sodium hydroxide are added to beaker B.
Give your answer to 2 decimal places.
[the previous moles was 8.3x10-3]
can someone help me the mark scheme to get 3 marks is Excess mol H+ = 7.10 × 10-4
but how my method was
50/1000 x 0.0108=5.4x10-3
then I did 8.3x10-3-5.4x10-3=2.9x10-3
then I do 2.9x10-3/150/100 but its wrong
Give your answer to 2 decimal places.
[the previous moles was 8.3x10-3]
can someone help me the mark scheme to get 3 marks is Excess mol H+ = 7.10 × 10-4
but how my method was
50/1000 x 0.0108=5.4x10-3
then I did 8.3x10-3-5.4x10-3=2.9x10-3
then I do 2.9x10-3/150/100 but its wrong
What is in beaker B? Do you have the full question with all the values and context?
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