F. Arjun purchased 250 g of glucose (C6 H12O6 ) for Rs 40. Find the cost of glucose per mole

Question

4) solve problems

F. Arjun purchased 250 g of glucose (C₆ H₁₂O₆ ) for Rs 40. Find the cost of glucose per mole

Answer 1

Given : cost for 250 g glucose = Rs 40  , formula of glucose = C₆H₁₂O₆ 

To find : cost of glucose per mole

solution:

molecular formula of glucose = C₆H₁₂O₆  

$\therefore$ molecular mass of glucose = (6× atomic mass of C)+(12× atomic mass of H) +(6× atomic mass of O)

=(6×12u)+(12×1u)+(6×16u)

=180 u 

n(number of moles ) = $\frac{Mass}{molarmass}$ 

=$\frac{250}{180}$ 

=1.39 mol 

price of 1.39 mol is 40 rupees , therefore for 1 mol

price for 1 mol of glucose  = $\frac{40\times 1}{1.39}$ = 28.8 Rupees

$\therefore$ cost per mol of glucose is 28.8 Rs