JEE MAIN - Chemistry (2021 - 25th July Morning Shift - No. 23)
Consider the complete combustion of butane, the amount of butane utilized to produce 72.0 g of water is ___________ $$\times$$ 10$$-$$1 g. (in nearest integer)
Answer
464
Explanation
$${C_4}{H_{10}} + {{13} \over 2}{O_2}\buildrel {} \over
\longrightarrow 4C{O_2} + 5{H_2}O$$
Moles of $${H_2}O = {{72} \over {18}} = 4$$
Moles of C4H10 used $$ = {1 \over 5} \times 4$$
Wight of C4H10 used $$ = {4 \over 5} \times 58$$
= 46.4 gm = 464 $$ \times $$ 10-1 g
Moles of $${H_2}O = {{72} \over {18}} = 4$$
Moles of C4H10 used $$ = {1 \over 5} \times 4$$
Wight of C4H10 used $$ = {4 \over 5} \times 58$$
= 46.4 gm = 464 $$ \times $$ 10-1 g
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