Write TRUE if the statement is correct and FALSE if the statement is wrong.

Chemistry

1 answer:

DedPeter [7]3 years ago

8 0

Answer:

true is the answer of first

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Which or these equations is balanced H2SO4 + 2Al > Al2(SO4)3 + H2 or 2KCl + Pb(NO3)2 > 2KNO3 + PbCl2

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Balancing of chemical equation is essential because of the law of conservation of mass, which states that the mass of a system can not be created or removed.

The second equation is balanced

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This is because the number of elements of each atom in the product side equal the number of elements of each atom on the reactant side.

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This is because there is 1 molecule of $SO_4^{-2}$ on reactant side as compared to 3 molecules of $SO_4^{-2}$

To balance the equation we add a coefficient of 3 on sulphuric acid ( $H_2SO_4$ ) and a coefficient of 3 on hydrogen ( $H_2$ )

$3H_2SO_4_(_a_q_) + 2Al_(_s_) ==> Al(SO_4)_3_(_a_q_) + 3H_2_(_g_)$

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Sound, light, kinetic, heat energy

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