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The standard heat of combustion of is at . If Al reacts with at , which of the following release 250 kJ of heat?

a)

The reaction of 0.624 mol of

b)

The formation of 0.624 mol of

c)

The reaction of 0.312 mol of

d)

The formation of 0.150 mol of



Question ID - 103193 | SaraNextGen Top Answer

The standard heat of combustion of is at . If Al reacts with at , which of the following release 250 kJ of heat?

a)

The reaction of 0.624 mol of

b)

The formation of 0.624 mol of

c)

The reaction of 0.312 mol of

d)

The formation of 0.150 mol of

1 Answer
127 votes
Answer Key / Explanation : (d) -

(d)

27 g                       51 g

1. 0.624 mol of on combustion gave=523 kJ

Hence false

2. Formation of 0.624 mol of gave

Hence, false

3. 0.312 mol of  on combustion gave = 261 kJ. Hence, false

Formation of 0.150 mol of gave . Hence, true

127 votes


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