Calculate the volume of 2.0 M HCI required to make 2.0 liters of solution wait p

Question

Calculate the volume of 2.0 M HCI required to make 2.0 liters of solution wait pH = 2 10 ml 20 ml 40 ml None of these Show calculations: A hydrocarbon contains 20% hydrogen and 80% C. Its molar mass is 45 g/mole. It: molecular formula is: CH_3 C_2H_6 C_3H C_3H_9 None of these Show calculations: How many moles of water can be produced when 40 grams of oxygen reacts excess ammonia 4NH_3 + 5 O_2 Rightarrow 4NO + 6_2O 6 1.5 3 0.3 None of these Show calculations:Which of the following molecules is planer: BH_3 NH_3 SF_6 CH_4 PCl_5 Standard reduction potentials for Cu^2+ and Zn^2+ are.0.34 V and -0.76V What is the potential for the cell corresponding to Cu^2+ (0.050M) + Zn Rightarrow Cu + Zn^2+(0.25M) 1.10 V 1.06 V 1.14 V 1.02 V None of the Show work:

Explanation / Answer

there are two many questions ...i am solving 2 of the five questions.

1) pH = 2 , [H+] = 10-2

Moles of acid = 2 x 10-2

V x 2 = 2 x 10-2     , V = 10-2 litre = 1000x 10-2 = 10 ml

2) BH3 is sp2 hybridised and so its planar

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