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1 year ago

State two safety precautions to be taken when performing diluting concentrated sulphuric acid with water

Chemistry

1 answer:

motikmotik1 year ago

4 0

<em>Explanation:</em>

<em>safety precautions to be taken when performing diluting concentrated sulphuric acid with water</em>

Using gloves while diluting to avoid injury from hot sulfuric acid to hands.
Wearing safety glasses to protect eyes
Must wear lab coat before performing any chemistry practical
Safety boots to protect your legs.

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Explanation:

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$Molarity=\frac{n\times 1000}{V_s}$

where,

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To calculate the moles, we use the equation:

moles of solute= $\frac{\text {given mass}}{\text {molar mass}}=\frac{2.06g}{171g/mol}=0.0120moles$

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The balanced reaction between barium hydroxide and perchloric acid:

$2HCIO_4+Ba(OH_)2\rightarrow BaCIO_4+2H_2O$

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HClO_4$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is $Ba(OH)_2$

We are given:

$n_1=1\\M_1=?\\V_1=8.50mL\\n_2=2\\M_2=0.364M\\V_2=15.9mL$

Putting values in above equation, we get:

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