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3 years ago

What is the molarity of 50gram of calcium carbonate is dissolved in 250ML of water

Chemistry

2 answers:

m_a_m_a [10]3 years ago

7 0

Answer:

Molar Mass of Calcium Carbonate = 100g

given mass = 50g

Number of mole of Calcium Carbonate =50/100 = 0.5 mole

Molarity = mole per litre of volume

Molarity = 0.5 /0.25 = 2mole/litre

Explanation:

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lisabon 2012 [21]3 years ago

6 0

Answer:

$mass \: of \: solute = 50 g \\ volume \: of \: the \: solution = 250ml \\ molar \: mass \: of \: solute \: = 100 \frac{g}{mol} \\ molarity = \frac{mole}{volume} \\ = \frac{ \frac{50}{100} }{250 \times {10}^{ - 3} } \\ = \frac{.5 \times {10}^{3} }{250} \\ = \frac{500}{250} \\ = 2mol \\ thank \: you$

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3 years ago

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Molarity of NaI solution = 0.00157 M

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Putting values in equation 1, we get:

$0.00157M=\frac{\text{Moles of NaI}}{0.020L}\\\\\text{Moles of NaI}=(0.00157mol/L\times 0.0200L)=3.14\times 10^{-5}mol$

For the given chemical reaction:

$Pb(NO_3)_2(aq.)+2NaI(aq.)\rightarrow PbI_2(s)+2NaNO_3(aq.)$

By Stoichiometry of the reaction:

2 moles of NaI reacts with 1 mole of lead (II) nitrate

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As, given amount of lead (II) nitrate is more than the required amount. So, it is considered as an excess reagent.

Thus, NaI is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

2 moles of NaI produces 1 mole of lead (II) iodide

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2 years ago

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3 years ago

What is the molarity of 50gram of calcium carbonate is dissolved in 250ML of water​

What is the molarity of 50gram of calcium carbonate is dissolved in 250ML of water