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3 years ago

12.5 mL of 0.280 M HNO3 and 5.0 mL of 0.920 M KOH are mixed. Is the resulting solution acidic, basic or neutral?

Chemistry

1 answer:

svlad2 [7]3 years ago

8 0

Answer:

The resulting solution is basic.

Explanation:

The reaction that takes place is:

HNO₃ + KOH → KNO₃ + H₂O

First we calculate the added moles of HNO₃ and KOH:

HNO₃ ⇒ 12.5 mL * 0.280 M = 3.5 mmol HNO₃

KOH ⇒ 5.0 mL * 0.920 M = 4.6 mmol KOH

As there are more KOH moles than HNO₃, the resulting solution is basic.

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A volume of 80.0 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. I

murzikaleks [220]

Answer:

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Explanation:

Step 1: data given

ΣQ gained = ΣQ lost

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with C= specific heat capacity ( in J/(g°C))

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Step 2: Calculate mass of steel

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Answer:

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Answer:

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