Step. 4: CuO (s) + H 2 SO 4 (aq) ----> CuSO 4 (aq) + H 2 O (l) A student recover

Question

Step. 4:   CuO(s) + H2SO4(aq) ----> CuSO4(aq) + H2O(l)

A student recovered 1.14g CuO, form step 3. The student was in a rush and only added 5.0mL of 6.0M H2SO4.

(a). How many mols of CuSO4 are formed ? __________ mols

  ( write answer in scientific notation, to 1 decimal places, NO units in answer. For example, if answer is 0.0454 then the answer should be entered as 4.5E-2)

(b). True/False : While the student rushed through the experiment, all of the CuO was still converted to CuSO4.   

_________

Explanation / Answer

M= n x (1000 / 5.0)

6.0 =  n x (1000 / 5.0)

n= 0.03 moles H2SO4

a) 1 mole of H2SO4 gives 1 mole of CuSO4   

0.03 moles H2SO4 forms 0.03 moles CuSO4 = 3.0 x 10-2 moles CuSO4

b) true all CuO converted to CuSO4

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