Answer:
1. 1.34g
2. 1.19g
3. 0.49g
Explanation:Please see attachment for explanation
the molar mass of formic acid CH2O2 = 46.03 g/mol
the number of moles of HCHO2 = 0.0349 g / 46.03 g/mol
n = 7.58 × 10^-4 mol
according to the balanced chemical equation
HCHO2 + NaOH → H2O + NaCHO2
1 mol of formic acid will react with 1 mol of NaOH
so we need 7.58 × 10^-4 mol of NaOH
the molarity = 0.1500M = 7.58 × 10^-4 mol / volume
the volume = 7.58 × 10^-4 mol / 0.1500M
= 5.05 × 10^-3 L = 5.05 ml
B this is because the forms of matter are solid liquid and gas. L m k if this is correct
it is water energy :) this is easy
The precipitate formed in the reaction has been AgCl. Hence, option B is correct.
The precipitate has been the solid insoluble substance that has been formed as the product in the double displacement reaction.
The precipitate settles down in the aqueous reaction mixture and are resulted from the double displacement reaction.
<h3>Which one is the precipitate?</h3>
The reaction of silver nitrate and KCl has been:
The reactants in the reaction are in the aqueous form. Thus, silver nitrate and KCl are aqueous.
The potassium nitrate has been an aqueous solution, while the silver chloride has been the solid product that precipitates out.
Thus, the precipitate formed in the reaction has been AgCl. Hence, option B is correct.
Learn more about precipitate, here:
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