CSEC chemistry multiple choice for June 2020.
Question 23 Should be 'B' mistakenly circled A
Question 53 should be A.
correction for Question 9.
M= mole/vol
moles = M x vol
moles = 0.5 x 2
moles = 1 mole of HCl
therefore
HCl = H+ + Cl- 1:1 mole ratio
so, H+ =1 mole.
Ans is A.
27 авг 2024