mols HCl = grams/molar mass = 6.4/36.5 = about 0.18 but that's an estimate.
Then mLHCl x MHCl = mLXOH x MXOH
30 x approx 0.18 = 25 mL x M XOH
M XOH = estimated 0.2
approx 0.2 mol/L contains 4.85 g in a L so
mols = grams/molar mass
0.2 = 4.85/molar mass and molar mass = estimated 23 for XOH. O is 16 and H is 1 so 23- 17 = about 6. The element closest to that is Li but an experiment like this should yield better results. Check my work. Check your numbers in the post.
30.00cm3 Hcl acid of conc. 6.4g/dm3 neutralised 25. 00cm3 of an unknown alkali (XOH),whose conc. was 4.85gdm3 calculate,
a. the molar conc. of XOH
be. the relative atomic mass of the element X,name the element .
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